an event or occurance, where things/people similar to that out of an indie film, takes place/interact.
"Last night at Jane's housewarming party, Tim gave her a Bright Eyes record. What an indie adventure."
Occurences in real life that may appear to be out of indie flicks, frequently imagined by kids who spend too much time watching said movies and not enough time actually experiencing the adventures.
So I was listening to those lamecore kids talking about how their indie adventure last night was actually interesting compared to their actual lives.