When the gang visits June's old house, Jack assumes it'll be a fun walk down memory lane. But the crew instead learns an important lesson: Never assume.

After adding another monster to the bestiary, Jack, June, Quint and Dirk learn a troubling truth: Their work is far from over.

Jack's vow to never trust another monster is put to the test. Quint, Dirk and June look to acquire a little — well, actually a lot — of weed killer.