Sixteen-year-old Marigold "Goldie" Vance has an insatiable curiosity and dreams of one day becoming a detective. Luckily for Goldie, with the St. Pascal Rockin' the Beach Music Festival coming to town, there's plenty of inexplicable shenanigans keeping her gumshoe brain busy, from mysterious power outages, to missing musicians, to Russian spies hiding in the shadows.