After the tragic loss of his wife in the fight against the forces of darkness, Gabriel is persuaded by Balthazar to rejoin his former team of demon hunters. They are to travel to Europe to confront four fallen angels who are to bring death and ruin to mankind. His team includes his former best friend Michael, who hides a dark secret, the mysterious Hannah, who can predict the future, and Lola, who is blessed with almost supernatural martial arts skills. After Gabriel loses part of his team in the first confrontation with the angels, he must deal with his painful past and decide who he can really count among his allies ...