Lex throws Lois for a loop by proposing marriage. Meanwhile, Clark smells a rat when Lex "saves" the Daily Planet from going under.

Lucy Lane is working in Metropolis again, and now she has a new boyfriend named Johnny. He's turned into a cyborg body powered with kryptonite by the hands of two doctors. When Johnny finds out what he really is now, he tries to defeat Superman.

Lois and Clark need to travel to 1966 with the help of H.G. Wells and his time machine to prevent a villain from the future who wants to destroy the baby Superman. The villain tells Lois about Clark's most important secret...his secret identity!

When Lois and Clark finally begin with the wedding plans, they must stop again and investigate a Nazi organization which is trying to take over Metropolis.

While at a sanitarium to regain her memory, Lois becomes a candidate for a sinister doctor's behavior experiments.