Qin Tian and Xiao Fan are childhood sweethearts. One day, Qin Tian was diagnosed with severe illness and decided to break up with Xiao Fan. Suddenly, a rain carried him to the future eight years later, when he had already married Xiao Fan and had a son. This rainy season trip gave Qin Tian an opportunity to choose the future.

Some lives are linked across time, connected by destiny. While aiding old theatre attendant Lin Ge, aspiring dancer Qiu Qian stumbles upon his diary which chronicles the life and memories they shared together since childhood, thus discovering a timeless love story concealed in another dimension.

Lin Tianjiao is the top girl in her school. During one of her tests, she resorted to copying from notes, and is spotted by Gao Xiang, who is considered a wayward student. When the note was discovered by the teacher, Gao Xiang chooses to claim responsibility for trying to cheat. Lin Tianjiao feels apologetic towards Gao Xiang, and begins their friendship. Meanwhile, Lin Tianjiao's good friend, Lu Tiantian is courting Ou Xiaoyang. However, due to his poor academic standing, Lin Tianjiao ignores him completely. Classmate Huang Tao is secretly in love with Lin Tianjiao, but is too shy to express it. As a result, he and his best buddy, Li Tao are at loggerheads with Gao Xiang.