In the real world, Eliza Mirk is shy, weird, and friendless. Online, Eliza is LadyConstellation, anonymous creator of the wildly popular webcomic Monstrous Sea. Eliza can’t imagine enjoying the real world as much as she loves her digital community, and has no desire to try.

Then Wallace Warland, Monstrous Sea’s biggest fanfiction writer, transfers to her school. Wallace thinks Eliza is just another fan, and Eliza begins to wonder if a life offline might be worthwhile. But when Eliza’s secret is accidentally shared with the world, everything she’s built—her story, her relationship with Wallace, and even her sanity—begins to fall apart.