When Gunn's cousin becomes involved in a plan to rob a museum, it's up to the gang at Angel Inc. to help him get out of it. The robbers are after the Shroud of Rahmon. Going undercover with the demon thieves, Angel and Gunn are soon in over their heads. The Shroud has magical powers that turn people crazy. Soon it's infecting all of them, even Angel. Angel's relationship with Detective Kate Lockley is both bettered and worsened when she intrudes on the heist.