1x23 - Monster Beach

Brainfreeze is bummed that his best buddy won't come to his once a month full moon parties. Meanwhile, rumours of a werewolf roaming Monster Beach persist, and Mutt is behaving really weirdly. But what really happens to an unhinged half-dog monster when the moon rises once a month? And who is this tedious accountant that keeps turning up out of nowhere? Jan and Dean decide to solve the mystery and save Brainfreeze and Mutt's friendship for once and for all. After all, how bad can it be?