A heart attack patient, who is also an escaped convict, transforms into a cyborg with a heart powered by kryptonite.

Lex Luthor tricks Superboy into switching bodies with him, causing mass confusion in Capital City.

Superboy is put on trial after Metallo overtakes him in court using kryptonite. Can Superboy stop him before it is too late or will he be the one found guilty?

Trying to protect his Aunt Cassandra, Superboy confronts a force which he cannot win against when death takes a human form.