Cooper Raiff wanted to make Hal & Harper his way. He says he went through hell to get it onto a streamer. Photo: MUBI A single dad, played by Mark Ruffalo, is driving his 7- and 9-year-old children, Hal and Harper, home from school. It’s been five years since his wife’s suicide, and he’s finally emerging from the fog of grief and trying to be a present father. “So, who fills up your bucket at school?” he reads awkwardly from a list of questions printed off the internet. “Well, I didn’t play