Siavash Rouzbehan has recently lost his father and now his uncle is taking care of his family. Siavash loves his cousin, Mahtab whose father, Anwari, used to be his father's steward, and is now very close to his uncle. Siavash's curiosity leads him to realize that his father wasn't killed in an accident, but he was murdered. After discovering this fact, Siavash goes to visit his old friend, Karo and begins his investigation with his help. Soon new details about his father's death is revealed to him. His father who was in love with his driver's wife, causes the driver's death by faking an accident. Then he buys an apartment for the woman and marries her. While Siavash is busy with his research, his uncle is arranging a marriage with Siavash's mother, Talat. Siavash gets very disturbed, but with the help of Karo, he tries to maintain his calm and find the truth about his father's destiny. From then on, Siavash pretends that he has lost his mental balance. So while his uncle and Anwari are neglecting him, he continues his research until he discovers the secrets to the life of his family.