Gary is a cantankerous, aging demon slayer who has nothing left to lose. Burdened by his “chosen one” status and backed by a team of specialists he can’t relate to, Gary struggles to keep interest in the Earth-saving duty he never asked for and doesn’t want.
With Tucker in a coma and demon activity on the rise, Gary's job is harder than ever. With funding at all time low and danger at an all time high, the Ministry hires an intern, Mudge, who is of no help at all.
Gary is public enemy number one when Tucker goes missing. He must work to undo a selfish mistake while facing his most twisted of enemies: Tucker Fans. Mudge returns only to prove they're more useless than even previously thought.
Just when Gary thinks the Ministry can't get any worse, he discovers they're allowing his nemesis to regenrate. Gary is accidentally impregnanted with it's egg when he tries to destroy him and is forced to birth his demon offspring.
Fed up with his life and job, Gary moves to the forest where he befriends a group of fed up demons also looking to escape the daily grind. Leslie and Hanley are forced to go after him when the Ministry begins to fall apart in his absense.
In an attempt to get his baby nemesis out of his life and the Ministry for good, Gary puts him up for adoption.
Leslie, Gary and Tucker take a day trip to visit a billionaire on his Superyacht to secure an investment for the Ministry. Things go perfectly fine.... until they don't.
When Leslie discovers her daughter, Didi, has an imaginary friend, she enlists the help of Gary to hunt him down and destroy him. This time, it's personal.
Intent on destorying all of human kind, the Prophetess Vale takes one last stab at leading the Demon Revolution. Executing a plan to free the Evil Book from the Ministry's vaults won't be easy, however, considering her last remaining minion is Larry; her human sex toy.
The prophecy is finally fulfilled; an ancient demon rises and the Demon Revolution begins. The Ministry struggles to save humanity from the powerful Ryndok, and Gary learns something new about his body.
It doesn't look good for humankind as the Demon Revolution continues and the end is nigh. Gary has a very sore back and looks to the rest of his team for help in defeating Ryndok.
