Eris has been working on tweaking the effects of the drug Bifrost. After a shipment gets stollen she comes face to face with her supplier, Loki, who wants her to form an alliance. Welcoming her into the fold would solidify them as a true mafia group but his "tests" are only building her bloodlust.
Tsukuyomi, one of the only people outside her officers she trusts, turns out to have prompted Loki's interest in her. When blood is a turn on, it's always a scene to see who ends up on top.
