Grace is a single mother whose life revolves around her eight-year-old son, Finn. All she wants is to keep him safe and happy. She indulges his latest passion for playing Pokémon Go, stepping out of her comfort zone and into the local community, where Finn strikes up a conversation with a stranger. Can they find the fine balance between stranger danger and being polite? Will Finn finally catch an Onix? And will Grace let herself be caught?