Boog and Elliot's harmless prank on McSquizzy backfires wildly, sending him into painful spasms. Feeling guilty, the pair offer to play nurse to the grumbling patient until he's fit to get back to his duties.

Elliot and Cleo end up as unlikely partners on a dangerous boat journey. With the lake now shrouded in fog, soon the bickering pair are lost on the water, with no idea of how to get back home safely.