Alvin is a clone. One of four, all raised separately, all with unnatural powers. Terrified by their potential, their creator attempts to wipe their recent memories, their knowledge of the talents. But the process goes wrong, and all four are left with no memory at all. They see the world with brand new eyes.
Sent to a remote research station, kept under the guidance of an intelligent ape, Alvin begins to recover his memories. Desperate to rediscover his brothers, he sets off to London in a desperate search for their creator. But when he is kidnapped by criminal apes, the trouble really begins.