By Annie Barrett
Updated September 16, 2011 at 12:00 PM EDT

Once upon a time, two musicians made a movie, fell in love, won an Oscar, and then…who knows? You will if you catch the upcoming documentary The Swell Season, directed by Nick August-Perna and Chris Dapkins. The film follows Once stars Glen Hansard (pictured) and Marketa Irglova’s meteoric rise after “Falling Slowly” won the 2008 Oscar for Best Original Song. Watch your old friends frolic in the ocean and debate the merits of fame in the trailer:

The Swell Season opens in limited release Oct. 21.