Teddy Yu, a retired secret agent, now runs a chiropractic clinic and lives a quiet life with his two children, Nicky and Natalie. He often tells his kids exaggerated tales of his spy days, which they dismiss as mere fantasies. However, their ordinary lives take a dramatic turn when Rocco, a vengeful ex-CIA operative, kidnaps Teddy, believing he holds vital information. Nicky, a disillusioned martial artist, and Natalie, a rebellious teen, are suddenly thrust into their father’s hidden world of espionage. As they uncover Teddy’s true past, they realize the gravity of the situation and the skills they must quickly hone to rescue him.

Nicky and Natalie team up with their father’s old friend, Uncle Tai, who coaches them in martial arts and espionage tactics. Balancing their civilian lives, they dive deep into a dangerous underworld, facing off against Rocco’s henchmen and uncovering clues to locate Teddy. Throughout this journey, the siblings grow closer and develop newfound respect for their father's incredible but hidden sacrifices. Their determination to save Teddy brings them face-to-face with Rocco in a high-stakes confrontation, testing their newfound abilities and family bonds to the limit.