From the manual:
You play the role of Walter Cobra, a clever but absent minded young lad who has two favourite hobbies: exploring, and inventing. One day you stumble across a faded old map which shows the route to a buried object marked as "The Golden Dragon". The starting-point on the map is a wishing-well located a couple of miles from your home.
The next day you amble over to the wishing-well and climb down the walls of the well. Eventually you reach the bottom. You then suddenly realise that you have left behind a very important item: the map.
You decide to press on regardless. You remember some of the places shown on the map but, bearing in mind the size of the map, this quest will surely be the greatest challenge of your life!
Your objective is to seek and find the legendary Golden Dragon. En route, you must collect 12 power crystals and destroy 3 reactors. You must investigate: the Chapel, the Joke Shops, the Elephant House, the Armoury, the Ghost Maze, the Music Rooms, and the Time Warps.