Twelve-year-old Brubeck Farrell has two problems. First, she needs to help the Science Squad of Central Wisconsin raise enough money for quality ultrasound equipment to record bat sounds. Second, she needs to convince her mum to marry her longtime girlfriend, Ginger. When Ginger overhears some of Bru's bat sounds and wants to use them in the music she's composing for a video game, Bru realises that the solutions to her two problems may be intertwined. Will Bru's fundraising efforts get the Squad the bat detection equipment they need? And what will it take to get her mom and Ginger to say 'I do'?