Parshuram's Vengeance

Parvati is upset because of something and when Gajanan asks her what was wrong, she tells him everything. She says that Parshurams parents died and tells her the story how they served food to an entire army when egoistic King Kartavirya Arjuna comes to his ashram. After they have finished their food, Kartavirya asks Parshurams parents to give him their holy cow and he will pay them as much as they want. When they refuse the king gets angry and kills them.