In the aftermath of "Crisis on Infinite Earths" Superman's origin was revamped and Superboy was erased from Superman's past. However, the Legion's history greatly revolved around Superboy, and that version of the character was retconned into being part of a "pocket universe", a solution which caused several continuity errors. After the "Zero Hour" miniseries, Legion history was completely rebooted. Garth's new history started when the twins went with Mekt on a trip in their parents' new space cruiser and became stranded on the barren planet Korbal after the cruiser's power cells drained. Ayla suggested that they use the "Lightning Beasts" (the only living things on the planet) in an attempt to recharge their cruiser. The only result of this, however, was that all three were found in comas the following day as a result of massive electrocution.