A cold-blooded assassin accidentally switches identities with a down-and-out wannabe actor, which leads to a series of absurd situations. If you can change your way of living, how would you like to spend it? Top assassin Zhou Quan finds himself in the most unlikely position when he exchanges identities with Chen Xiao Meng, an extra who has a hard time even landing a proper acting gig. Once a cold-blooded killer, Zhou Quan gets to reexamine his life after hitting rock bottom. In the process of posing as a killer, Chen Xiao Meng completely reshapes his life.