Killjoy is back in the fourth installment of the demonic clown series. This time Killjoy is being accused of not being evil, since he let one of his victims(Sandie) get away. Killjoy must rely on his only chance of proving how evil he really is... get Sandie into hell as his witness.

The demon clown Killjoy is resurrected once again, but this time he is not given the name of his victim and is trapped in his realm. Using a magic mirror he lures four unsuspecting college students into his realm where he can have his macabre fun! A mysterious man returns and we finally discover who Killjoy's true target is!

In this sequel, two juvenile detention officers must escort a group of criminally-inclined urban kids to the country where they are being forced to renovate a shelter for teens as punishment for their crimes. After one of them is shot by a local, the survivors seek refuge in the home of a voodoo woman, where they mistakenly summon legendary clown-faced demon Killjoy who begins hunting them down one by one.

A horrific explosion creates a dimensional portal between Tromaville and its dimensional mirror image, Amortville. While the Toxie is trapped in the mirror dimension, Tromaville comes under the control of his evil doppelganger, the Noxious Offender.