Jacob's grandfather told wild stories about the orphanage he'd been in as a child, a home where the children were invisible, or could conjure fire, or fly. In his dying breath, he urges Jacob to "find the bird. In the loop. Tell them what happened, Yakob." Jacob travels to Wales to find the orphanage that was bombed in 1940 and yet somehow still exists, and bring a message to the headmistress who died in the bombing but is very much alive.