After getting bitten by a vampire, the young Lafcadio is cursed with a scent that attracts all kinds of monster . That's why the Bureau of Abnormal Species and Evil Deities (B.A.S.E.D) use him as a bait to capture and/or kill mythical creatures. He is placed under the supervision of a workaholic B.A.S.E.D agent known as the "Undertaker", who gets her superpowers thanks to a terminal disease. Will Lafcadio survive and how will the relationship between those two evolve?