The Simon Snow series helped Cath and her twin sister, Wren, cope with the loss of their mother. Now they are starting college, but Cath is afraid of proceeding with her new life apart from Wren.

Twins Raquel and Lucinda Mendoza used to be inseparable, but since their parents divorced Raquel has become bossy and obsessive, while Lucinda has immersed herself in her ice skating lessons, and the pandemic and its enforced isolation has only made things worse; but then they are sent to their father's ranch in central California and while Raquel thinks that this is a chance to get their parents back together by driving his girlfriend away, Lucinda...