Mahabharata - the story of pandavas - the five sons of King Pandu and Kauravas - the 100 sons of Kings Dritarashtra. were brothers - Pandavas and Kauravas were cousins. Dritarashtra rules the Kingdom of Hastinapura with the help of his brother Pandu. Because of a curse , Pandu goes to the forest with his two wives Kunti and Madri and there with the grace of five Gods , he begets his five children known as Pandavas.
After the death of Pandu, Pandavas come back to Hastinapura. However , Kauravas do not like Pandavas as they are superior to them in education and strength. Once , Kauravas invite Pandavas to a game of dice , and by using foul play they win the share of Pandavas ' Kingdom and send them to spend time in forests for 12 years and hide incognito for one year . After many Hardships Pandavas complete this punishment and ask back Kouravas for their share of Kingdom. Hence Pandavas declare a war on Kauravas , does not give Pandavas declare a war on kauravas and after the war that lasts for 18 days, Finally wins back the entire kingdom of Hastinapura.