“Cha Cha Real Smooth” – inspired by something his mom once told him about how raising his disabled sister had shaped her life – was strong enough for him to bluff his way through.“I think I do the best work when I’m just entirely focused on writing one thing and telling people, ‘I can’t talk for two weeks because Dakota Johnson thinks I have a script I don’t have,’” Raiff joked in an interview with TheWrap.In “Cha Cha Real Smooth,” which takes its name from the classic b’nei mitzvah bop, Andrew (Raiff) finds a kindred spirit in an outcast mom named Domino (Johnson) and her autistic daughter, Lola (Vanessa Burghardt). As one party blurs into the next, they develop a unique connection: that of two people standing together at different crossroads in their lives.As a filmmaker, Raiff is not only unafraid of the awkward transitions between major life changes – he’s drawn to them.