On a cold, stormy night in the midst of October, six people enter a hotel room. By dawn, only five remain. Five months earlier, McKenna Macintosh is introduced to Carter Ford and finds herself drawn into an unfamiliar, intoxicating world. As summer unfolds, their friendship deepens---yet unresolved tensions and secrets loom, entwining their lives in unexpected ways. When McKenna and Carter enter the hotel room that October night, everything they once knew has changed, and nothing will ever be the same again.