Houshang Sherafat is a well-known and honorable teacher who is facing financial difficulties, which have significantly impacted his family. Houshang's mother is sick, and they cannot afford to buy her medicine. One day, one of his students named Houshmand Kamrava gives him three counterfeit 50,000-toman bills to help him find a way to purchase the medicine. However, Houshang discovers that the bills are fake and is forced to spend them to buy the medication. During this time, he becomes acquainted with Houshmand's father, Kamran Kamrava, a very wealthy individual. Their interactions lead Houshang to abandon his sense of integrity, unintentionally amass wealth, and then become involved in a criminal incident.