Clark and Siobhan are lovers at but broke up shortly due to differences . Siobhan unlocked her cursed . Lex Luthor works on his superhero project Doomsday . Clark learn his origins just like in Man Of Steel ( but the amount of time exploring is about two years ) . Doomsday went rampage Clark save Lois . Lois found out Siobhan and her powers . Siobhan confronts Lois and decides to kill her . Clark helps , Doomsday appears again with same powers because of Clark Blood . Siobhan helps but died shortly , Clark kills Doomsday with the Mothership Engine. ( Post Credit : Zod sets destination to Earth for Clark )
