The Thorn Birds is about two women who go to extreme measures to fulfill their desires. Seo Jung Eun (Han Hye Jin) works as a small-time actress but dreams of becoming a star someday. She grew up in a orphanage and hopes to find her real mom if she becomes a star. Lee Young Jo (Joo Sang Wook) is from a chaebol family, but he starts his own business. Jung Eun and Han Yu Kyung (Kim Min Jung) both love him. Choi Kang Woo (Seo Do Yeong) is a movie director who loves Jung Eun.