《暗夜博士：莫比亚斯》将首次把漫威宇宙中最另类的暗黑超级英雄莫比亚斯呈现于大银幕。由奥斯卡最佳男配得主杰瑞德·莱托饰演的莫比亚斯博士身患一种罕见的血液疾病，命不久矣的他决心找到治疗方法拯救其他同病患者。为此，他孤注一掷试图根除疾病。一开始一切似乎都成功了，但他的内心深处有一股黑暗却无端释放。善念能否压制住邪恶，还是莫比亚斯会屈服于这神秘的欲望？
Childhood friends Tommy and Tuppence meet in London after having served in World War I. Recently demobed, short of money, and with no job prospects, they decide to become adventurers for hire. Soon, they are employed by the British Government to locate a secret treaty signed before the war.