Chris Garner (Will Smith) used up all his savings to buy a high-tech treatment device and sold it to hospitals everywhere, but the price was high and not many people accepted it. No matter how hard he tried, he could not provide a good living environment for his wife and children. His wife (Thandie Newton) finally chose to leave home. From then on, he and his son Christopher (Jaden Smith) depended on each other. Chris finally got back an internship opportunity at a stock investment company. Even if there was no pay and the chance of success was only 5%, he still worked hard. His son was his strength. He looked at everyone with contempt, hid in the public toilet in the subway station with his son, and lived in the church shelter... He firmly believed that happiness would come tomorrow.