The Devas along with the asuras decided to get Amṛta (Ambrosia—the celestial honey of immortalily) by churning The ocean of milk. The Devas went to bring Mandara-mountain, for use because the churning rod. Their attempt was futile. The asuras made a trial with the very same outcome. The Bhūtagaṇas (Guards) https://128.199.208.170/