Kishkindha Kanda introduces Hanuman, minister to the exiled monkey prince Sugriva and one of the epic's most beloved figures, who brings Rama and Lakshmana into alliance with Sugriva against his brother Vali, the reigning king of the monkey kingdom of Kishkindha, who had driven Sugriva into exile and taken his wife. Rama agrees to help Sugriva reclaim his throne in exchange for the monkey kingdom's aid in finding Sita, and kills Vali by shooting him from concealment during a duel between the two brothers, a killing the epic itself has Vali directly and pointedly challenge as dishonorable, since Rama struck a combatant who could not see him rather than facing him in open, fair combat, a charge Rama answers at length rather than leaving unaddressed.
With Sugriva restored to his throne, the book turns to organizing a vast search for Sita across every direction, sending monkey search parties to the four corners of the world, and the southern party, led by the elderly monkey minister Jambavan, eventually learns from the dying Jatayu's brother Sampati that Sita is held on the island kingdom of Lanka, setting up Hanuman's legendary leap across the ocean that opens the following book. Sugriva's own initial reluctance to organize the search once safely restored to his throne, distracted by the pleasures of kingship until Lakshmana's anger forces him to act, is treated by the text as a real, if minor, failing rather than glossed over, consistent with the epic's broader habit of letting even its allied heroes fall short before recommitting to their duty.