Iolaus was depressed by his failure to save a woman from falling to her death, and he told Hercules to find another partner. Fortune, the goddess of luck, was behind it all. Feeling bad for Iolaus, she tried to make amends by wiping his memory of the tradegy. Unfortunately, the meddlesome Fortune accidentally erased his entire memory, including Hercules. Iolaus went to work for the troublemaker Zeno and wound up fighting Hercules until the son of Zeus convinced his friend he had the heart of a hero -- not a killer. Then Hercules summoned Fortune, who restored Iolaus' memory. (thetvdb.com)