Cora is an energetic teen. She loves nature. Coming up is a hike to a lake with her best friend, Rayna. Cora's big brother agrees to take them. The plan is set! It's all Cora can think about. She makes to-do lists for herself and Rayna. Rayna isn't thrilled, but she loves her friend. And they might find treasure. Then problems threaten the trip. Cora loses control of her plans, temper, and closest relationships.