Chicago cop, Frank Darling, discovers a huge green-skinned mutant named Dragon who suffers from amnesia. In the hope of uncovering his own identity, Dragon joins Chicago P.D. and battles evil mutants led by the mysterious Overlord.
Evidence comes up that, before he was found by Lt. Frank Darling, the Dragon might of been Overlord of the Vicious Circle preceding the current Overlord. Will Dragon's past show him that used to be one of the greatest criminals in Chicago?
