Onam is celebrated primarily to mark the annual homecoming of the legendary King Mahabali, a generous and beloved ruler of Kerala. According to Hindu mythology, Mahabali was a just king loved by his subjects, but the gods, feeling threatened by his power, sought Lord Vishnu's help. Vishnu took the form of a dwarf Brahmin, Vamana, and asked Mahabali for three paces of land. When granted, Vamana grew to cover the earth and sky in two steps and for the third, Mahabali humbly offered his own head. Due to his humility and devotion, Vishnu allowed him to return and visit his people once a year, which is celebrated as Onam. Onam is also a harvest festival celebrated in Kerala, signifying prosperity, abundance, and unity. It is a time for families and communities to come together to rejoice in nature's bounty at the end of the monsoon season. The ten-day festival includes various cultural events such as boat races, traditional dances, floral decorations (Pookalams), and a grand feast called Onam Sadya. Beyond the mythological roots, Onam promotes values of togetherness, harmony, and gratitude irrespective of social status or religion, making it a cultural celebration across Kerala and among Malayalis worldwide.