Meet Matildas star goalkeeper Mackenzie Arnold as a kid and follow her football and friendship adventures. Macca is in Year 6 and loving life. She plays fullback for her beloved Seaport Strikers, skates and loves hanging out with her mates - she's always up for a kick-around in the park and a good-natured prank. But when Macca is late for training one too many times, injures herself skating and has an unexpected run-in with a local resident, Coach questions her commitment to the team and benches her for a big game. How can Macca make it up to Coach and prove that football is something she's serious about? When the Strikers' goalie is too sick to play, Macca puts on the gloves and steps up.