Fifteen-year-old Y/N is the result of a secret HYDRA experiment, enhanced beyond any Super Soldier before them. After discovering classified files connected to Nick Fury’s death, they steal the evidence and go on the run. S.H.I.E.L.D. believes they know more than they’re saying, while the Avengers chase them for answers. Following the files, Y/N tracks down the Winter Soldier, only to discover he’s actually Bucky Barnes—someone they knew from their time in HYDRA. Before the truth can be revealed, HYDRA appears and activates Y/N’s trigger words. In a panic, Y/N unleashes a mysterious wave of powerful purple energy before being captured alongside Bucky. Locked in HYDRA’s custody once again, Y/N struggles against their conditioning while Bucky fiercely protects them. Meanwhile, the Avengers uncover the truth: Y/N was never the enemy. Now they must find and rescue both Y/N and Bucky before HYDRA succeeds in turning the world’s most powerful teenager into their ultimate weapon.