After some time, Rhea bore 5 children, all of which Cronus swallowed whole because of a prophesy from his mother & father that he would eventually be overthrown by one of his sons. Distressed, Rhea decided to save her sixth child and instead gave Cronus stones wrapped in swaddling to swallow.
Years passed and Zeus, Rhea's sixth child, quickly grew up to be a handsome youth. When the time came, he left Crete, the mountain where he was raised, and ask Metis, his future wife for advice on how to defeat his father. Metis then gave Zeus a drink indistinguishable from Cronus’ favorite wine but designed to make him vomit for ages.
Zeus disguised himself as the gods’ cupbearer and, after a while, successfully slipped Metis’ drink to Cronus. The plan worked perfectly: Cronus started vomiting and spilled out all of Zeus’ five siblings, but only after throwing up the stone. Rhea’s children – Hestia, Demeter, Hera, Hades, and Poseidon – recognized Zeus as their leader.
But Zeus is far from victory for Cronus is still in command. With the help of the faithful Titans and the rebel Atlas, the decade-long war between the Titans & the Olympians started. At one point, it seemed that Zeus would be defeated but with the weapons that the Cyclops gave in gratitude, whom he freed in addition to the Hecantoncheires, who also set an ambush for the Titans, Zeus could finally call himself the King of the Universe.