HBO has confirmed the debut date for the second season of the comedy series Vice Principals, which will conclude its 18-episode, two-season run with nine new episodes starting Sunday, September 17 (10:30-11:00 p.m. ET/PT). The tumultuous school year at North Jackson High continues and a new semester brings lots of changes. Gamby and Russell are about to learn that the only thing harder than gaining power is holding on to it, as the darkest comedy on television returns to finish what was started. If you haven't seen the first season of Vice Principals, there will be SPOILERS below, so read on at your own risk.

The trailer, which debuted on HBO YouTube, features Danny McBride's Neal Gamby, dressed in an Indian headdress with tribal warpaint, standing in the midst of his school which has plunged into the depths of chaos. Through a brief voiceover, we hear Gamby state that, "My killer is coming back, and when he does, I'll be ready." Gamby then squares off with a tiger in the middle of the hallway, while we get a glimpse at a mysterious masked figure. After spending the entire first season trying to get the new principal (Kimberly Hebert Gregory) fired, both Gamby and Russell are named Co-Principals in the season finale, which comes to a shocking conclusion when a figure wearing a Native American head dress and war paint guns down Gamby and presumably leaves him for dead.

RELATED: Vice Principals Season 2 Trailer Has Gamby Out for Revenge

Since Gamby says that "his killer" is still out there, that presumably means that Gamby was killed in the finale, but no plot details have been revealed quite yet. It's possible that this is all some sort of a vision Gamby is having in the hospital, before he comes to, but nothing has been revealed quite yet. Just before Gamby was gunned down in the finale, both Gamby and Russell's (Walton Goggins) cars were set on fire. Since the figure's face was never shown, there are theories all over the Internet about who this masked killer may be. One of the theories is that it's Principal Brown, perhaps as revenge for Gamby getting her fired. One thing is for certain, though: this season of Vice Principals will be the last.

When HBO gave the green light for this outlandish comedy series back in February 2014, the cable network ordered 18 episodes, which were to be split into two nine-episode seasons. Both seasons were shot back-to-back, with Danny McBride revealing in interviews last September, just after the Season 1 finale, that HBO could have released all 18 episodes right now, if they wanted to. While this season will mark the end of Vice Principals, Rough House Pictures, the production company created by Vice Principals creators Danny McBride and Jody Hill, signed a new two-year overall deal with HBO in September, so there may be a brand new series from this duo coming soon.

HBO's hit comedy series Vice Principals was created by Danny McBride and Jody Hill and directed by David Gordon Green, who all collaborated on HBO's iconic comedy series Eastbound & Down, which ran for four seasons. McBride, Hill and Green are joined as executive producers by Jonathan Watson and Stephanie Laing. Also starring in Vice Principals are Kimberly Hebert Gregory, Georgia King, Busy Phillips, Shea Whigham and Sheaun McKinney. Take a look at the first trailer for Vice Principals Season 2, debuting Sunday, September 17 on HBO.