Frooze (that’s you) was listening to music while waiting for his bus to go home. Suddenly, a spaceship appears out of nowhere, hovers above our hero, zaps him into a frog and abducts him. As the spaceship flies over Africa to go back to space, you manage to jump out of the spaceship and falls into a swamp full of crocodiles. Your goal is to collect objects with special powers that will help you evolving back to your human form and chase those aliens and make them pay.
Having started the game as a frog, you can only move in a “L” shape pattern (a bit like a knight move on a chess board) when collecting objects. Keep that in mind when trying to complete levels.