Joss Whedon is back — on Twitter — to promote his latest project, which also might be the most important endeavor of his career: convincing Americans to vote.

On Wednesday (September 21), Whedon launched Save the Day, a video production company dedicated to getting people registered to vote and to the ballot box on November 8. He hopes to do so through a series of star-studded online videos, the first of which, entitled “Important,” kicked off the super PAC’s launch. Featuring 27 actors — including Avengers Robert Downey Jr., Scarlett Johansson, Don Cheadle, and Mark Ruffalo, as well as other famous people like Julianne Moore, Keegan-Michael Key, Matt McGorry, James Franco, Jesse Williams, Cobie Smulders, Martin Sheen, and Neil Patrick Harris — the video implores people to vote because “this isn’t an election, it’s a tipping point” for the country.

It’s also extremely self-aware, as Whedon and his famous friends aren’t above poking fun at political ads that feature dozens of celebrities (in varying degrees of celebrity). But at least they promise to get Mark Ruffalo naked in exchange for your vote. Come on, America. If not for the future of our country, do it to see Ruffalo’s D in IMAX 3-D.

Despite a few digs at Donald Trump (“Do we really want to give nuclear weapons to a man whose signature move is firing things?”), Save the Day isn’t about dragging the Republican nominee. It’s about galvanizing young people to take control of their futures.

“It’s not about attacking because Donny’s real good at attacking himself,” Whedon told The Hollywood Reporter. “It’s about getting people to vote, because it’s frightening the apathy that people are treating the most crucial election of their lifetimes with.”

Save the Day currently has more than 10 videos in production, with plans to make between 15 and 25 before the election.