Destroy the Defendroids - S1.E1

Lex Luthor's company builds robots called Defendroids to protect Metropolis. His real plan is to make Superman useless. Superman figures out the plan and in an effort to drive Luthor out into the open he announces his retirement. Luthor then plans to use the Defendroids to steal gold being shipped in Metropolis. Superman manages to put an end to Luthor's plan, but Luthor manages to get away.