Heatwave brings back what he thinks is a sample from an asteroid, and blames the Recruits when it disappears. While searching for it to clear their names, the Recruits quickly discover that the "rock" is actually an alien - and it's loose in the Headquarters!

When the Bots become stranded in space while making repairs on the Asgard, the Recruits have to figure out who does what in order to perform a daring rescue.