Galaxy has always known she's destined for fame and fortune as a solo singer. She has the voice, the dance moves and is always coming up with new lyrics. So when she spots a poster for a talent show at school, she knows she has to enter.
Then, troublemaker Sabrina suggests they enter together, and Galaxy is shocked. Firstly, that they actually have something in common, and secondly, that Sabrina suggests they form a rock band! Rock is totally not Galaxy's thing, she doesn't know Sabrina that well, and what would her best friend Kia think? She's about to say no when Sabrina points out that Beyoncé and Lauryn Hill both got their start being in a band, and agrees that Galaxy can be the lead singer. So she hesitantly decides to share the spotlight. But when the only students interested in joining their band are Grace, a socially awkward goody two-shoes, and Galaxy's little sister Zaya, is Galaxy's chance at stardom over before it's even begun?