Ye Ran accidentally obtained a key and found an ancient book and a door in the attic of his home. Ye Ran's parents disappeared when he was very young, and he was fostered in the home of his mother's best friend Chen Yisi. At that time, Ye Ran was only eight years old. Ye Ran would receive anonymous birthday gifts every year on his birthday. Chen Yisi's family had a child named Jiang Chengxuan, who was the brother of his childhood sweetheart. His father disappeared together with Ye Ran's parents, and they both wanted to know what happened back then. They arrived at Ye Ran's old house and entered the door together, looking for their family together. In the process of searching, they met "another self" and together they solved the conspiracy and secrets that happened that year...
Intention: perseverance and hard work