After an unexpected incident brings Lu Shiyan and Gu Yishuang together in a marriage because of an unplanned pregnancy, they welcome their adorable child and begin a life of love after marriage. Later, He Mengyan interferes and sends people to kidnap Gu Yishuang and their seven-year-old child. To protect her son, Gu Yishuang sacrifices herself. After enduring inhuman torture, she is abandoned in the wilderness. Determined to return to the past and save his wife and child, Lu Shiyan devotes himself to researching a time machine. However, after years of overwork, he suddenly dies of a heart attack. Their nine-year-old child inherits his father's research materials, successfully invents a time machine, and connects it to a wristwatch. Originally intending to return to the year his mother met with disaster to save her, the child unexpectedly travels back ten years instead.