In 2001, on a winter evening, two sibling groups meet to go sledding. Cléo, fourteen, is going through a tumultuous time. What was meant to be an ordinary outing will turn her life upside down.

Lupe, head of a Latinx punk rock band, discovers only her piercing musical scream can stop an alien invasion. She and her bandmates become the target of two warring alien races hellbent on destroying each other, and taking planet Earth down with them. With the help of Lupe’s sweet, shotgun-toting Abuela, Pachi, and her high-powered, socialite mother Karen, the gang of misfits do all they can to save the world.

Waterloo will now have its own semi-pro men's hockey team, thus expelling the amateur women's leagues from the arena. To avenge their lost ice time, an impulsive hockey player and a ruthless octogenarian—a former derby champion—have a plan: recruit the city's disenfranchised and form an underground roller derby team. With the help of the Women's Club, they will prove that women's sports can also inspire crowds and that sisterhood is the ultimate act of resistance.