Astal travels through a beautiful world full of jewels trying to rescue his girlfriend Leda. He can defeat enemies with breath attacks, by jumping on them, hitting the ground below them, picking them up and throwing them (he is very strong) and more. A bird he rescued at the beginning of the game follows him and also helps him.
This game is very difficult and requires precise memorization of the enemies and their patterns. They kind of had to do it like that because it would be very short otherwise.