When the bowling team from Area 51 hits town, the long-standing rivalry-cum-war is reignited, and a prank goes horribly wrong. Now Carter not only has to mediate between Area 51 and the home team to prevent more destruction, but also deal with the consequences of the first prank: a blob with an insatiable appetite. Elsewhere, Duncan returns to plead his case to a resistant Lexi.

Henry's 20-year-old project returns with more on board than it left with, and when a man is killed and another injured, Henry will have to face his past in order to save everyone's life. Back in town, Jo and Carter attempt to return the items from the towers to the owners with mixed results.