Obnoxious athlete Sean Kelvin drowns in an icy, kryptonite-infested lake, and is resurrected with an intense need for body heat. He freezes his old girlfriend to death and sets his sights on Chloe.

Clark discovers that he has X-ray vision, but struggles to use it properly. Meanwhile, shape-shifter Tina Greer robs a bank impersonating Lex Luthor, and then decides that she wants to become Lana Lang – permanently.

When Coach Walt’s football legacy is threatened by a cheating scandal, the coach entices Clark onto the team. Kryptonite in the coach’s sauna infects him with the ability to generate fire, and his enemies start getting burned.

Bug-lover Greg has an accident involving meteor rocks and his own insect collection, giving him creepy insect characteristics and powers. Lana is endangered when Greg decides that she is the perfect mate to start a colony.