Three years ago, Lu Yuan and Shen Hanzhi teamed up to intercept a batch of biological weapons samples abroad. After the mission was successful, Lu Yuan was framed for treason and his memory was erased. Three years later, he brought the remaining fragments to Shen Hanzhi, only to find that her memory had also been tampered with - the 'cooperation' they remembered was not the same thing at all. A hidden timeline hides their true relationship: are they comrades-in-arms, or enemies who betrayed each other?
