The Fallen Ones

Archangel Michael has left Heaven for Earth a long time ago. Now, they travel space and time alongside with their friends: Velma, a fairy specialized in poisonous plants; Cass, a vampire with great fighting abilities; Iulius, a human with an abnormal intelligence; Grig, a stone giant who was once a mortal; Cyryl, a Nachzehrer that has come back from the dead. And Gavin, of course, their best friend who has been so much more than a friend for far too long now.
When the seven friends move to a new city, in a new year, everything seems to go for the best.
Until Michael's past suddenly comes back for them.