Four years after the events in Manscheid, Luc Capitani is working as a handyman in the station district of Luxembourg City. Until Bianca, a prostitute, hires him to investigate the disappearance of her friend Andrea. The search is cut short when Capitani locates her body in a forest, and the hunt for her killer begins. Meanwhile, Lucky Onu arrives in Luxembourg from Nigeria, to look for his sister.
在《复仇者联盟4：终局之战》的结尾，美国队长将盾牌交给了猎鹰（安东尼·麦凯饰），相信他能够继承美国队长的精神。此后，“猎鹰”萨姆·威尔逊和“冬兵”巴奇·巴恩斯（塞巴斯蒂安·斯坦饰）联合参与了一场全球性冒险行动，他们的能力和耐心受到考验 [39]。“美国队长”史蒂夫·罗杰斯卸任、灭霸被终结后，这个世界依旧不宁静。猎鹰继承了美国队长头衔之后美国政府对此心存抵触 [22]。“泽莫男爵”赫尔穆特·泽莫（丹尼尔·布鲁赫饰）似乎还要捣乱，猎鹰与冬兵出任务时还遇到了美国队长的前女友莎伦·卡特（艾米丽·万凯普饰） [1
