In 2026, redeemed super-soldier Bucky Barnes reluctantly teams up with genetically engineered assassin Agent 90, Katia van Dees, to stop ruthless mercenary leader Ethan Blackwood from resurrecting HYDRA's super-soldier program through Project Dominion. As they race across the globe battling elite assassins and confronting the trauma of their pasts, an unexpected romance emerges that could become their greatest strength—or their ultimate weakness.