- In the middle of Nowheresville lives 16-year-old Mike who wants out of his crappy life - permanently! Spending his time devising ways to do himself in, he considers the fatal brain tumor in his head as a godsend. That changes when he meets a girl and falls in love for the first time - without even knowing what love is.
- 马力欧和路易吉是生活在布鲁克林的两名水管工,他们刚刚成立了自己的小公司,但很显然,他们的家人并不完全支持兄弟两人的这份事业。某日,在工作中,马力欧和路易吉被水管吸入到了一个光怪陆离的世界之中,两人在旅途中被迫分开,马力欧来到了由碧姬公主统治的蘑菇王国,而路易吉则不幸的被传送到了由酷霸王统治的库巴王国。此时,酷霸王正准备大举进攻蘑菇国,掳走公主并和她结婚,在这个节骨眼上,马力欧的出现带给了碧姬公主希望,她带着马力欧来到了丛林王国,请求那里的国王和王子的支援。