Kanoa lives in a world haunted by war. The Eventide, the dystopian military, kills innocent civilians to faze the rebellion, which Kanoa works for. When Kanoa gets reassigned as a spy, she has to betray those she loves and join the Eventide. But while she is there, she finds that the world she lives in is not reality. Inspired by the song Blinding, by Florence and the Machine, Held Under follows Kanoa through her battle to find the world she once lived in.