On this episode of Supernatural…
Castiel decides to join Sam and Dean as a new hunter.
The trio follow up on mysterious and cartoonish robberies and deaths
It leads them to one of their father's old friends, Fred Jones, staying at a retirement home. He happens to have powers that cause everything around him to act like a cartoon.
The head doctor uses Fred to rob banks.
Fred is awakened from his state to stop the doctor, but requests that he be fixed so he can't hurt anyone anymore.
Naomi tells Castiel to not come to Heaven unless she calls.
Sam has flashbacks about meeting Amelia's father. Amelia learns that her husband is alive.