Wren, a nonbinary thirteen-year-old who just moved to a new house in the desert, knows something odd is going on next door. They've seen confusing things inside that seem impossible to explain. Then they learn that nobody even lives there, and the mystery grows. But when Wren and their siblings, along with a girl who lives nearby, decide to take a look inside the mysterious house, it turns out to be even stranger than what any of them imagined.