Louis, a writer who is unhappy in life and work, took his son Jack and daughter Zoe to Ohio for a holiday. On the way, Louis learned that his mother, who had been estranged from him for many years, was seriously ill. In desperation, the three decided to take an early flight to visit. Louis arrived home to find his mother dead and his grieving father, Stanley, suffering from mental illness and refusing to communicate with others. Louis, who has an awkward relationship with his father, is about to leave with Jack and Zoe, only to find his father Stanley missing. After several searches, Louise found Stanley in the discoverer expedition team. Seeing his delirious father, Louis decides to join the team with Jack and Zoe to treat his father's psychological problems. At this time, the three people found that the expedition team was exploring in the most primitive form of life and was completely self-sufficient. Jack and Zoe are very embarrassed by many differences in life and thinking. With the help of Louis, the two became close to their father. The improvement in the relationship also made Louis understand his father Stanley's heart, and Louis tried to go into Stanley's life and talk to him. Slowly, Stanley and Louis opened their hearts and opened their knots for many years. Three generations of grandparents and grandchildren have found their relatives.