Christopher Plummer plays a pot-dealing grandfather kicked out of his retirement home in the new road-trip flick, Boundaries, written and directed by Shana Feste. We sat down with Feste and co-stars Vera Farmiga, who plays Plummer’s character’s daughter, and Lewis MacDougall – the grandson enlisted to help his pops offload his stash – to talk about working with the acclaimed actor, and the catharsis of putting your family issues up on screen.