Best friends Evie (Grace Helbig), Charlie (Hannah Hart), and Kate (Mamrie Hart) are throwing a birthday party and more than the cake is getting LIT. Just before her birthday, Kate gets a letter she wrote in high school to her future self – listing everything she wanted to do when she grew up. Now, Kate has only a few days to make her dreams come true before the clock countdowns to midnight and the craziest birthday party ever spins wildly out of control…

It’s all fun and games until the cops get called, right? YouTube sensations Grace Helbig, Hannah Hart and Mamrie Hart have reunited for a new comedy, “Dirty 30,” and just like its title suggests, the film details an epic 30th birthday rager gone bad.

The story follows the three stream queens, as lifelong friends stuck in a rut. Kate (Mamrie) is trapped in a job she hates, sucks at dating and is on the cusp of turning 30. Evie (Helbig) is married but has in-laws from hell and Charlie (Hannah) is recently engaged but can’t seem to pull her business (or her act) together. When Kate’s birthday arrives, her two besties vow to throw her the wildest party and make her have the time of her life. What they unleash is a lot of fun, and a whole lot of chaos.

Three YouTube stars who are collectively referred to as the video site’s “Holy Trinity” are getting ready to party. The second trailer has arrived for Dirty Thirty, a feature film that will star Mamrie Hart, Grace Helbig, and Hannah Hart.