Qiao Yi'an wakes up after a drunken night and catches her nemesis, Lu Shiyan, in bed with another man. Before she can expose him, a mysterious Couple System binds them together, forcing them to complete intimate couple missions—or face the consequences. As their rivalry turns into undeniable chemistry, Qiao Yi'an uncovers Lu Shiyan's biggest secret: The man she can't stand has loved her all along.
