Mr. Lion stops in at Mr. Monkey, Monkey Mechanic's garage saying complaining about the horn in his jeep. It doesn't sound right. Mr. Monkey performs some super mechanic-y horn testing with different kinds of horns from his box of noisemakers. Mr. Lion wants something that sounds like his roar. After a bit of thinking, Mr. Monkey gathers some materials, his trusty monkey wrench, and creates a horn so perfect, Mr. Lion roars with delight!