The Mahabharata and the Ramayana are India's two great epics. The Mahabharata is a massive and sprawling story about the five heroic and virtuous Panadava brothers and their quest to gain and hold an empire against their wicked cousins, the Kauravas. The epic climaxes with a great battle which destroys all the world's armies. Also, the Hindu god Krishna has a pivotal role in this epic as a guide to the heroes.
The Ramayana also revolves around a Hindu god: Rama. In this epic, Rama is a prince who must go into exile before he can claim his throne. While in exile, a demon named Ravana kidnaps his wife Sita. Rama and his brother Lakshman, aided by an army of monkeys must go and rescue her. They become friends and allies with a powerful monkey named Hanuman, also a Hindu deity, along the way.
While both epics portray Hindu dharma, or moral righteousness, many look to Rama in particular as a model of human morality.
I realize I did not quite summarize these in ten words each. I suppose "The Mahabharata's Pandavas. with Krishna, seek to defeat the Kauravas" and "Rama quests to rescue Sita from Ravana in the Ramayana" might fit the bill.