The Thai drama "Sunshine in Heaven" (also known as: You are the sun in my heart) tells the story of a man who fell in love with his stepmother's adopted daughter on the way to revenge his stepmother.

Patalepen Depvolanon Phattharapon Dejpangwannon was originally a child born in a happy family, but all this was shattered by his father's new love. He was kicked out of the house and his mother died one after another. Twenty years later, Paul changed his name and surname and decided to take revenge on his father and stepmother. He decided to approach his stepmother, let her fall in love with himself completely, and then take back everything that belongs to him and destroy his father's family business.

After meeting his stepmother's adopted daughter Nay Napa (Lanmida Tirapa Prapyram Ida Theerapat), Paul originally intended to drag her into hell. But in the process of getting along, Paul's feelings for Nanapa gradually changed.