Seven years ago, a serious car accident destroyed two families and changed the lives of Frankie Lam and Priscilla Wong. Seven years later, due to a traffic accident, Frankie re-encounters Priscilla. Life is still filled with joys and sorrows. Priscilla and her sister Shiga Lin have become estranged as people around them ones pass away one by one. Surprisingly, an oddly behaved doctor (Mark Ma) is able to get to the root of the problem. Priscilla is busy taking care of her daughter and step-son (Zeno Koo), while Frankie struggles to understand the needs of his only daughter (Chloe So). Because of fate, Zeno and Chloe become close with each other. But their relationship creates a lot of problems for their mutual friend (Kyle Li), and the truth of the car accident also gradually surfaces. Everyone must face change again...