Michael Cera and real-life girlfriend Charlyne Yi are starring in the unconventional comedy Paper Hearts.

According to The Hollywood Reporter, indie film insiders are excited about about the indie, starring Michael Cera and others from Judd Apatow's talent stable, that is expected to debut at next year's Sundance Film Festival.

"It's pretty much 'the one,' at least as far as festival programmers are concerned," one seller said.

Those familiar with Paper Hearts describe it as part-documentary, part-scripted comedy about the real-life relationship between Cera and his girlfriend, Charlyne Yi, another member of the Apatow acting crew (she played the pigtailed stoner in Knocked Up). Like Cera's recent Nick and Norah's Infinite Playlist, music also is a key theme.

Nicholas Jasenovec, a relative unknown who has worked on past Apatow titles, makes his directing debut with the film.

The film will debut at next year's Sundance Film Festival.