Before he joins the Mortal Kombat tournament, Bi Han, the original Sub Zero, has been tricked into retrieving Shinnok's amulet and giving it to Quan Chi Raiden sends Sub Zero into the Netherrealm to go get it back while in the Netherrealm he must face Quan Chi his minons and Scorpion before he can fight Shinnok and save all the realms