'Ungrateful' is a romantic drama that takes place at the time of Moses and charts the stories, alliances and feuds between a number of Jewish tribes. Among other stories and subplots, it tells the story of two Jewish cousins, Ameel and Ashel, who both want to marry Anael, the beautiful girl of the tribe. But a murder disturbs the peace of their Jewish tribes. This film is inspired by the famous story of Moses' sacrificial cow.
Samad and Parvaneh, who are newly married and are going to Mashhad at the beginning of their life together. Staying in an inn near the shrine and pilgrimage is an opportunity for them to get to know each other's personalities more. Samad is interested in beekeeping job in his hometown. But Parvaneh wants to go to Tehran
Amir Hossein, Manouchehr, and Shahkar are young and unmarried who decide to go to Emirates in order to find well-paid jobs. Unfortunately, Shahkar gets mugged by a motor rider and they lose all of their money. Shahkar's uncle suggests them working in a workshop owned by a young lady called Ms. Arabshahi. She has one condition though, that they should pass her tests.
Akbar, Nader, Abbas and Reza, who have been good friends since childhood, all want to achieve an aspiration. Abbas and Nader are wearing uniforms, Akbar joins his uncle's smuggling gang and Reza, who is paralyzed, does not wish for anything other than to continue his friendship with the other three.
Shahbal, a member of the Black Mountain tribe, gets into a fight with several people and rides a horse towards Musa Khan's tribe with a wounded body. Musa Khan's sons and some of his men want to kill him, but Musa Khan prevents him and entrusts his daughter Ghazal to heal his wounds.