Unknown Story

Nope; but if your daughter Danae gets a child, your grandson will kill you
Wait what? No that could not happen.
Will I have more children?
Help me out this basement! PLEASE!
Help! PLEASE! I AM STUCK ON THIS CHEST WITH MY SON!
King Acrisius asks the Apollo's oracle if he will get more children and the oracle says no.
Thank you so much for helping me and my son. I appreciate it.
No Problem!
When King Acrisius knows that if Danae gets children, they will kill him, he locks her up in a basement. Zeus then made Dannae pregnant.
AHHHHHHHHHH
When King Acrisius first plan does not work, he tries to lock her up in a chest and sent her away to the sea to either drown or starve.
GRANDFATHER THAT WAS AN ACCIDENT
NOOOOOOOOO!
A fisherman named Dictys sees Dannae and her baby in a chest and helps them out.
Athene and Hermes give Perseus advice and tools to kill Medusa. Perseus goes on his journey to kill Medusa and strikes her head off.
Click to Perseus and his grandfather go to the games and accidentally kills his grandfather by throwing a discus at his foot. The destiny comes true.