Long long ago when Hera and Zeus were still around they made a pact. Hera told Zeus to never go to the mortal world and find a mortal to marry.

One day Zeus broke that promise and went to the mortal world there he found a beautiful woman greateful to marry him. Hera heard about all of this and went to to the human world. She set herself to find Zeus. Well Zeus the great and most powerful wore a costume so Hera won't see him.

Hera wasn't that dumb and found Zeus in his costume. Hera said " You had broke your promise, you will be sent back up to the sky and never to come back to the mortal world again."