Cove and Heather first meet when they are ten years old, bonding over a seashell they find on the beach. They each keep half of the shell and promise to meet again the following morning. However, when Heather has a terrible accident and Cove's family decides to leave, Cove begs his parents to drive around the area to find Heather so he can give her the seashell and remind her of their promise to meet again the following week. Unaware of the accident,...