Poor old Dr. Jackie has just gulped a transforming potion made by his enemy Dr. Piqued, and become Mr. Wide, a bloated fatty who makes Gary Liddon look like Twiggy. Not being terribly happy with this situation, the great fool is now wobbling around in search of an antidote. The cure to his obesity is located in Dr. Piqued's secret lab, and the hunt for his place of experimentation forms the plot.
The search is carried out in two parts - a vertically scrolling journey through Hyde Park, and the negotiation of the London Sewers, where the evil Doctor's lab resides.
There are plenty of puzzles and problems to overcome, but the gameplay isn't at all rewarding or addictive. The graphics are very ugly, with flickering sprites and gaudy backdrops, and the action quickly becomes tiresome.