It mainly briefly describes two girls who were preparing to commit suicide due to the pressure of life. By accident, they exchanged souls. They decided not to be like before, but to face life bravely. They experienced many hardships, but in the end they were together.
Purpose: Don't be afraid of difficulties. In reality, there will be no rebirth like in novels. Exchange souls. As long as you don't give up and keep working hard, you will always overcome difficulties.