Desc: Bummer Summer: Directed by Zach Weintraub. With Mackinley Robinson, Alex Rivera, Simon Kogan, Aaron Buechel. Seventeen year-old Isaac tags along on an impromptu road trip with his older brother Ben and Ben's ex-girlfriend Lila. The trip staggers along uncertainly as the trio's delicate and ambiguous dynamic is made increasingly weaker by the brothers' mutual feelings for Lila.