Bound Heart was a 2018 Thai TV series, which starred Pchy and Karina. The play tells the story of the difficulties and challenges the two sisters experienced as they grew up and their search for their true feelings. The story begins with a young girl, Nasi. She lives in a poor family, but she is a smart, kind and brave girl. Her sister, Nunnally, was a selfish, lazy, and timid girl. The relationship between Nasi and Na Nali was very tense. They hated each other. At school, Nasi met a mysterious teacher named Chatucha. Chatucha taught Nasi music and told her that music could heal the soul. Nasi became interested in music and decided to become a musician. However, Na Nali was full of jealousy and hatred towards Nasi's music dream. She tried to stop Nasi from pursuing her dream and tried to make her give up music. Finally, Nasi couldn't stand Na Nali's bullying and oppression and decided to leave home to start her own musical journey. Nasi encountered many difficulties and challenges in her musical journey, but she persisted in her dream and eventually became a successful musician. Na Nali finally realized her malice and prejudice against Nasi and began to understand and support Nasi. The two sisters finally reconciled and became good friends. The drama explored the topics of family, friendship, dreams, and responsibilities by telling the experiences and challenges of the two sisters growing up. It was a TV series full of warmth and hope.