Ayumu thought his life might finally get back to normal, or as normal as it can be for a zombie. However, destiny has other plans for him.
Ayumu is killed by a serial killer, and revived by Eucliwood Hellscythe. Now a zombie he serves the cute necromancer who brought him back.
Muon Sorata appears to be an ordinary college student. However, he has a secret identity, that of the mysterious thief called Mouse. He is supported by his three beautiful female subordinates.