Yikes!!! Get ready for a devious treasure hunt with the infamous scheming Wario. Capture the shining gold and vast treasures locked deep inside a hidden cave. But, beware of poison ponds, perilous prisons, endless walls and creepy woods! Make a quick change into Sea Dragon Wario, Eagle Wario or Bull Wario and utilize their mighty strengths. Blow away enemy cave defenders with body attacks and power actions. Succeed in this greedy plot to seize the riches of this underground world and find this key to freedom!

I, Wario, have an interesting story to tell. One day during my vacation in the Awazon river basin, I landed my trusty seaplane, Bulldog, and decide to relax in the shadow of the beautiful Aldegara Waterfall. While basking in the sun, I spied some strange creatures with masks entering the waterfall. This piqued my interest! I hurried over and followed them into the waterfall. Behind the falls there was a large cave, and in the back of the cave ... there was a vault filled with a glorious mountain of treasure!! Some of the masked creatures jumped me, but I quickly overcame them. "This treasure is all mine now!", I though to myself and rushed in to collect the loot. Suddenly, the floor collapsed and I fell! I found myself deep within the Earth! I was quite angry and vowed revenge on these creatures, "I will get their treasure!!!"