A bunch of goofballs attempt to protect the Earth from forces wildly beyond their control. Episodes are mostly self-contained stories, with an overarching plot developing.
Dark Electron comes to the team with a unique problem, asking for their help dealing with some problematic local fauna.
(two fun facts about this episode:
first, in the original (pen & paper) version of the series, this was the last episode made in a notebook. the rest of the series was done on individual sheets of paper with each episode stapled together.
second, the time machine scene at the end is pulled directly from S2:E1)