Drull's premise at the beginning is very simple. Take Drull (the cute little frog head) and bring him to the flower. You'll click on the flower or objects you want him to move to. Then you want to get Drull to go through the mouth. Guide him from flower to flower until you pass through the mouth. The game will start asking you to do more difficult things as the levels go on and will introduce new objects. Some objects can only be touched once or they break. Other objects must be collected before you can enter the mouth. There are many different levels and all present different brain teasers and new ways to use your strategies.