Rubel wants to join school but reality forces him to smuggle across the River Ganges between India and Bangladesh. The same river eroded his home. Now he lives on Char, an island within this river which starts eroding now.
Jiayi is a left-behind child who has to endure the bitter taste of separation from parents. However, she still has to forget sadness and grows up in pain and joy with her brother.
A group of students are at a crossroads in life preparing for the High School Entrance Exam, and most of them are left-behind children. Can they get good grades to change their own destiny?