Jessie is going to be 18, a grown-up. After Jessie's father left them, her mom wants to start a new life and ends the gas service store they own. Mom wants to erase anything about her husband. She even wants to throw away the motorcycle which helped them carrying the gas tank. To Jessie, gas service store is not only a gas service but the whole picture of family. Motorcycle carries not only gas tanks but also the memories. Jessie's dad becomes her secret coach, teaching her how to ride motorcycle behind her mom. When Jessie rides the motorcycle with her head down, her dad always encourages her to head up and to look forward. On the runway of the motorcycle test, Jessie tries to keep the balance between parents, motorcycle and herself. Does the 7 seconds mean the starting bell of her life or the final?