When a quiet seaside town is suddenly overrun by hundreds of giant monsters, two young sisters are the only ones prepared to handle the situation. Using their keen interest in architecture, local history, folklore and gymnastics, the two girls attempt to not only stop the monsters' rampage but also figure out why it's happening, while learning about colonialism on Indigenous land. The story is set in Victoria, British Columbia, and the city's impressive history and creepy folklore add intrigue to the proceedings, as more and more monstrous guests arrive on this unceded Lekwungen Territory.