Mary Lou, a mouse, has just been elected mayor of the little farming town of Sugarville, and is set to be married to her long-time sweetheart Sly Snake (the town mechanic). The night before their wedding, a suspicious fire burns the sugar mill to the ground--putting most of the town out of work. The slimy local land baron, a frog named Rowley, says he'll finish off the town--unless Mary Lou agrees to marry him. Sly Snake leaps in to defend Mary Lou's honor, but is beaten badly--and worse, accused of setting the fire. Sly has to get the goods on Rowley, clear his own name, and stop the wedding-before Rowley goes back on his (good for nothing) word and wipes Sugarville off the map.