Grimm provides a hands on lesson on how to train properly for their craft, Mikey faces the facts behind Hank and Emily's relationship and everyone witnesses the reason behind Bobbi's fear of death.
The students attend Grimm's 40th Birthday/Halloween Party; Randy and Grimm share a bromantic moment; A new and improved Bobbi gives a courageous pep talk to Mikey.
In the middle of Grimm's 40th Birthday/Halloween Party, Mikey confronts his classroom crush; A surprise guest leaves his mark at the party; Grimm forces himself into a do-or-die situation.