When Cronos had gone to sleep at sunset, Rhea hid Zeus far away in the upper world.
Please don't leave me here!
She came back with a rock, and went to sleep, leaving it in a blanket to hide it.
In the morning Zeus found Cronos eating a rock, knowing that could have been himself.
Zeus knew now why he was hidden, Cronos killed his father, he was afraid that his children would kill him, so he ate them! Rhea had saved Zeus for a reason! But his brothers and sisters are trapped in there!
Zeus and his siblings would get revenge!
Yes it worked!
Five years later...
When Zeus was older he got his revenge, He became Cronos's "drink bringer" he put a potion in the drink , which made Cronos puke out his children he ate.
Zeus then got his siblings into place and they fought the Titans and Cronos.
Zeus defeated Cronos in battle, and ruled the upper world with his bolts. He sent his siblings into other livings.