Celia Sutton, the adopted daughter of the Thorne family, has suffered unbearable oppression from them for years and desperately wants to escape. At her grandpa's 80th birthday banquet, she has a one-night stand with her cousin who has just returned from abroad. Afterward, Celia is imprisoned by her family. Liam Thorne searches for her everywhere to no avail, until he returns to his own home.