Sky thought he was a competent killer, just as Lin thought he was a competent agent, but in fact two chess pieces that were incompatible with the chess game were abandoned at the same time. The unlucky two encountered a leak of the X virus in a secret research institute. After that, the two chess pieces who escaped from death carried a cheating device and started a battle royale with their former companions, zombies and mutants.
In fact, this book is a travelogue of three strange species.
The first is a female cook who can dismember any creature with a scalpel, the second is a scope that can use a nailing machine to achieve the accuracy of a sniper rifle, and the third is Genius 250 who can convert a gun into a cannon.