Didn’t think anything could top today’s news in unnecessary sequels? We’re looking at you, Tron. Think again! Human Centipede III (Full Sequence) is here to literally shit on your parade—just as it has been doing since its explosive 2010 debut. EW just exclusively learned that the gross out trilogy will come full circle (Ew) when it hits theaters and video on demand next month. And the other poop scoop? We now know the film’s plot, which centers around the assembling of a 500 person centipede

Human Centipede III will bring back Centipede stars Dieter Laser (Part I), Laurence R. Harvey (Part II), and introduce Eric Roberts. It comes out May 22, so plan your date night accordingly. Read on for the film’s official synopsis:

Bully prison warden Bill Boss (Dieter Laser), leading a big state prison in the US of A, has a lot of problems; his prison statistically has the highest amount of prison riots, medical costs and staff turnover in the country. But foremost he is unable to get the respect he thinks he deserves from his inmates and the state Governor (Eric Roberts). He constantly fails in experimenting with different ideas for the ideal punishment to get the inmates in line, which drives him, together with the sizzling heat, completely insane. Under threats of termination by the Governor, his loyal right hand man Dwight (Laurence R Harvey) comes up with a brilliant idea. A revolutionary idea which could change the American prison system for good and save billions of dollars. An idea based on the notorious Human Centipede movies, that will literally and figuratively get the inmates on their knees, creating the ultimate punishment and deterrent for anyone considering a life of crime. Having nothing to lose, Bill and Dwight create a jaw-dropping 500-person prison centipede.

[via EW]