The one thing breakout star Maisy Stella wasn’t expecting when she arrived in Muskoka, Canada, to appear opposite Aubrey Plaza in Megan Park’s new dramedy, My Old Ass, was a lake full of leeches. But she took one for the team for the chance to appear in the unconventional plot sparked by a trippy night camping with friends.

Park, who wrote and directed the film, asks the big “what if?” by pairing Stella’s character, Elliott, an 18-year-old about to kickstart her life, with her 39-year-old self (Plaza). When older Elliott warns her younger self to avoid contact with Chad, a summer worker at her dad’s cranberry bog, her future is thrown into disarray.

INTO sat down with Stella and Park to discuss how the film came together, what representation looks like for the next generation of queer filmmakers, and a special Justin Bieber moment.