Ann's birthday begins with her mother absent and her father promising to keep her company. When the mother returns she angrily scolds Allen for living in his lab, then locks his research results in a safe to block his entry into a competition. She tells Ann to fetch a birthday gift and check the safe for a file. Ann opens the safe but becomes trapped inside and cries for help. The episode ends as her father arrives and finds Ann locked in the safe, leaving the family to confront an immediate, dangerous crisis.
Ann is trapped inside a home safe and her father, Allen, frantically guesses passwords and pleads for help. When he calls his wife Lisa, a man identifies himself as Elvis Turner, Lisa's ex, and demands Allen hand over research on enhancing CT-active cells in exchange for letting Lisa return to unlock the safe. Lisa admits she changed the password to stop Allen stealing from the family and accuses him of being so malicious he 'cursed our daughter.' Allen prepares to call a rescue team, but Ann remains locked and the extortion demand leaves the outcome unresolved.
At the safe, the team struggles to force open a protected lock while a woman's oxygen gauge falls dangerously low. Cutting tools fail and the cutter breaks; the captain warns there's only one password attempt left and a wrong entry will lock access for a month. The oxygen monitor shows she has at most thirty minutes. Faced with that clock, a man volunteers to run to the yoga studio to get the password from "her" and promises to call back. He leaves with a shouted, "Wait for me!" as the team risks one final chance.
Mr. Lucas confronts Lisa in the yoga room, accusing her of hiding Ann and demanding she come home because "Ann is locked in the safe." Lisa refuses to give the safe password or be coerced; she rejects him, threatens divorce and endures onlookers mocking her husband's parenting. Lucas presses for the password and the argument escalates from accusation to emergency when someone monitoring the safe reports oxygen has dropped to 12 percent. The episode ends on that dire alert—Ann may die unless they extract her immediately, leaving the rescue unresolved.
Allen pleads for the safe's password, warning that Ann—a child— doesn't have much time as her heart rate drops inside the locked safe. Lisa refuses, accusing Allen of cursing the girl to get money for his experiment and insisting she will not give the password unless Ann is brought to her. Under pressure, Allen agrees and tells the rescue team to bring the safe to the yoga studio; a caller answers, "We're on our way." The episode ends with the safe en route and Ann's fate unresolved while the password remains withheld.
At a tense family confrontation Lisa accuses Allen of neglect and of using their daughter Ann as a pawn to cover his jealousy. Allen insists Ann was truly in danger and demands proof: when the rescue team brings the safe, they’ll know who’s lying. Bystanders jeer, someone (Elvis) is struck and chaos erupts. Afraid that Ann’s testimony will ruin him, Allen declares he can’t let the safe arrive and prepares to stop it. Mr. Lucas questions Allen’s honesty as Ann is called — leaving the crowd waiting and the safe’s arrival in doubt.
Lisa is confronted with a safe at her door said to contain her daughter; rescuers urge her to enter the password as oxygen runs low. Her parents plead and argue—someone accuses Allen of hiring actors and calls the rescue an act. A supposed rescuer shows ID and warns the child is unconscious and may die if not freed. The scene turns when another person exposes the setup as fake. Lisa hesitates over the password, forced to decide whether to trust the 'rescue' while her daughter's fate and Allen's alleged plot remain unresolved.
Lisa is pressured to open a locked unit and, when she enters the wrong code, a fail-safe locks the container holding a five-year-old. Voices argue: a man presses for the password, someone warns he only wants it, and another vows to make him give up. Lisa insists she remembers the date but mixes up July 7 and May 20, stalling attempts to reopen the lock. Oxygen reads 3% as the child's mother pleads, "Save my child." Ann is begged for help, leaving the rescue unresolved as time runs out.
The episode opens with panicked shouts and a child's voice pleading "Dad! Help me!" from behind a locked safe as oxygen falls. The captain explains most safes can be reset via the security question, and the team urges Allen to reset the password to save Ann. Allen refuses and is accused of staging it out of jealousy—"I'm dating Lisa." Lisa first claims Ann is with grandparents and calls the voice fake, but someone reveals Ann wasn't left there. With oxygen down to 1%, Lisa decides to call her parents to confirm Ann's whereabouts, leaving the rescue unresolved.
After Elvis tells Lisa he wanted her to regret being with Allen, Lisa confronts Allen when he refuses to reset a password. Others tell Lisa not to trust Elvis, calling him a habitual liar. Lisa demands Allen kneel and apologize to Elvis. The demand becomes a timed ultimatum—only one minute left—so Allen reluctantly kneels and says, 'I'm sorry.' After his apology he resets the password and the group confirms it's done. Attention immediately shifts to Ann's birthday as someone calls 'Ann!', leaving the next action unresolved.