Entering a contest to redesign late author Emrys Myrddin's estate, aspiring architect Effy Sayre arrives at Hiraeth Manor where she meets a stodgy young literature scholar who draws her into a battle against dark forces - both mortal and magical - that threatens to consume them both.

"Told in alternating voices, when Theodore Finch and Violet Markey meet on the ledge of the bell tower at school--both teetering on the edge--it's the beginning of an unlikely relationship, a journey to discover the "natural wonders" of the state of Indiana, and two teens' desperate desire to heal and save one another"