The Powells must join together to save JJ, who's been kidnapped, courtesy of Mrs. X (Lucy Lawless) and forced to solve an enigma that could lead to the permanence of the trilsettum's effects. Meanwhile, Joshua reconnects with Katie and discovers that he's about to become a father, and George's fate hangs in the balance as a prisoner aboard a plane that's quickly spiraling out of control and about to crash.

After being zooped into the future and witnessing the downfall of her family, Stephanie must do everything in her power to alter a chain of events in the present that will expose the Powells' powers to the world. Meanwhile, with George's help, Jim tries to track down those responsible for the death of a fellow cop, and Mrs. X (Lucy Lawless) tasks an unlikely person to keep tabs on Katie and her unborn child.

The Powell's lives are in danger when a super-villain with animal-like powers is tasked by Mrs. X (Lucy Lawless) to eliminate the family. Meanwhile, good girl Daphne takes a rebellious step by ditching school with boyfriend Chris to attend a Sara Bareilles music video shoot,; JJ becomes suspicious of Mr. Litchfield's motives when he's presented with different equations from those of the rest of the academic decathlon team; and Katie makes a shocking discovery about Joshua - aka The Watcher.

The mysterious Mrs. X (Lucy Lawless, "Xena: Warrior Princess," "Battlestar Galactica") tasks the sexy - and dangerous - Sophie ("Battlestar Galactica's Tricia Helfer) to cause Jim and George to fall under her spell and make them do whatever she wants them to - which could place Jim's marriage in jeopardy. Meanwhile, Stephanie must decide whether or not to inject a patient with the trilsettum serum and risk turning him into a super in order to retain Dr. King's trust, and Daphne's boyfriend, Chris, begins to have suspicions about the Powell family's abilities.

Jim's feelings of guilt are overwhelming when, during a fight with a thug, he diverts a bullet that accidentally hits a boy - causing life-threatening harm. Meanwhile, Daphne's boyfriend, Chris, steals the trilsettum serum from the Powell house and injects his wheelchair-bound father, Roy (Anthony Michael Hall), with disastrous results; Joshua proposes to Katie; and JJ's teacher takes unscrupulous steps to get him to join the school's academic decathlon team.

The Powells' lives are in danger when Dr. King orders shape-shifter Victoria Morrow (Rebecca Mader, "Lost") to infiltrate the household and murder one of the family members; and JJ, with the aid of Daphne, attempts to solve the cold case murder of his ex-girlfriend Natalie's mother.

After a friend is attacked, Stephanie tells Jim that she wants to join forces with him to help catch the perp. But when Jim informs Stephanie that he's built for crime fighting - and she's not - the competition is on to see which one of them can solve the case first.  Meanwhile, Daphne feels like Jim is invoking a double standard when he allows JJ to date a senior but won't let her do the same, and Katie learns some disturbing news about Joshua - aka The Watcher.

While Internal Affairs officer Rachel Jacobs (Joanne Kelly, "Warehouse 13") investigates reports of a rogue cop, Jim risks revealing himself as the prime suspect when the police station is overrun by a group of thugs, and he is the only hope of survival. Meanwhile, while trying to nurse an ailing Joshua back to health at the lab, Katie and Stephanie run into Human Resources VP Victoria Morrow (Rebecca Mader, “Lost”) and begin to suspect that she isn't who she says she is.

Jim's wayward brother, Mike, makes a surprise visit to the Powell household and discovers the family has powers. But in an attempt to make some quick cash, he tries to convince JJ to using his abilities to win big by betting on the horses. Meanwhile, in a surprise twist, Katie is given a promotion at Global Tech by Human Resources VP Victoria Morrow (Rebecca Mader, "Lost"), who may be hiding a secret agenda, and Daphne is placed on the school's peer disciplinary committee and believes a student may have been wrongly accused of possessing drugs.

After Jim saves Dave Cotten's (Ricky Schroder) life, he and Stephanie become fast friends with Dave, his wife, Michelle (Annie Wersching, "24") and their kids. But Jim begins to suspect that the Cottens may be leading their own secret lives. Meanwhile, Daphne throws her hat into the high school ring for student council president, and Katie reveals a secret to Stephanie about her relationship with Joshua – aka The Watcher.

After George is mistaken as a hero for thwarting a robbery that Jim was responsible for stopping, tempers flare between the two friends when George thinks Jim is jealous of the attention he's receiving, and Jim feels that George is taking credit for something he didn't do and hogging the limelight. Meanwhile, Stephanie and Katie find themselves at odds over personal matters, JJ discovers a weakness in his powers, and Daphne's suspicions over Katie's boyfriend intensify.

Jim and Stephanie plan a romantic evening away from the kids to celebrate their 18th wedding anniversary, but instead find themselves teaming up and using their superpowers to deal with a serial arsonist who is exhibiting some special powers of his own. Meanwhile, Daphne and JJ are left home alone and join forces to win some big money in a poker game with some fellow students.

Stephanie tries to uncover the reason behind Jim's sudden loss of powers, which could put an end to his crime fighting days; JJ may be facing criminal charges after he's caught hacking into the school computer system by his teacher; Daphne uses her abilities to impress a boy; and Katie begins falling for her mysterious new beau.

Jim's secret identity is at risk when he tries to take down a dangerous mobster who has eluded George for years; Stephanie continues to look into Dr. Volson's previous research of a mysterious plant - against Dr. King's wishes; Daphne convinces a reluctant JJ to use his powers to help her become more knowledgeable in order to impress a boy; and JJ goes to extreme measures to help Katie get a date.

When Stephanie's hard-to-please parents, Barbara (Cybill Shepherd) and Allan Crane, pay an unexpected visit, the Powells must curb the use of their powers for fear of giving away their secret. But Barbara and Allan begin to suspect that something's awry when they witness some strange behavior. Meanwhile, when friend Trent Stafford (Jackson Rathbone, the “Twilight” movies) and his parents are the victims of a home invasion, Daphne uses her abilities to help Jim try to track down the thugs responsible for the violent act.

Jim goes into search mode to discover the cause of some recent earthquakes; Stephanie begins to suspect that JJ may be lying about his lack of super powers; and Daphne struggles with morality issues when she reads the minds of a fellow student and teacher and suspects they may be having an affair.

While patrolling the park at night in an effort to catch a mugger, Jim is mistaken for a murderous vigilante who has begun targeting the robbers; Stephanie makes a discovery that could explain how she and her family got their powers; Daphne uses her telepathic abilities to get into an exclusive party reserved for only the cool high school kids; and JJ tries out for the football team – with a lot of help from his powers.

After Stephanie's ring is stolen during a robbery at a high-end wedding, Jim and George become wedding crashers in an attempt to catch the thugs. Meanwhile, after learning that assistant Katie misguidedly used her own blood to cover for Stephanie's company physical exam – fearing that the results would reveal her powers – Stephanie is forced to use her powers in order to retrieve the blood sample from a secure lab; against her parents' wishes, Daphne wants to tell her friend Megan about her telepathic abilities after she inadvertently reads her mind and blurts out what she heard; and JJ asks Daphne to scan the mind of a cute girl to find out if she has feelings for him.

Jim attempts to track down some elusive bank robbers, Stephanie looks into discovering the source of the family's newly acquired powers, and Daphne, trying to find a way keep the voices in her head from drowning out her ability to read minds, discovers that JJ has become a super genius but is hiding it from the family. Meanwhile Jim and Stephanie not only keep their powers a secret from the world but from each other too, as Stephanie discovers Jim has become a crime fighter and Jim finds out that Stephanie has used her new power of speed -- after promising not to.

On the premiere episode, "Pilot," the Powell family must learn to deal with the super powers each has mysteriously acquired after the crash of their plane in the Amazon River. Jim discovers that he has the power of super strength and immediately feels a new sense of purpose and empowerment. With the aid of his best friend and confidant, George, he sets his sights on becoming a hero. Stephanie struggles to balance her family life with working 80 hours a week as an award-winning scientist, and after developing the power of speed, she can now move effortlessly through her daily responsibilities. Always the scientist, Stephanie immediately questions the phenomenon and, with the aid of her lab tech, Katie, the two begin to research the mystery behind the powers. For 16-year-old Daphne, she turns telepathic and hears other people's hopes, dreams, fears and joys, whether she cares to or not. And 14-year-old JJ struggles constantly to satisfy his parents and teachers as he grapples with a learning disability and bad grades. But he suddenly finds his mental abilities strengthened to a super genius level.