Ben (Paul Rudd) could really use some cash. In an effort to get some financial stability in his life, Ben decides to take a six-week course to become a guardian for someone with physical disabilities. The individual he gets paired up with turns out to be Trevor (Craig Roberts), a foul-mouthed British 20 year-old with muscular dystrophy. Trevor has a strict adherence to his routine, which entirely entails him staying in his living room sans a brief weekly trip to the park on Thursdays. In an effort to get him out of his comfort zone and see the greater world, Ben decides to take Trevor to see various tourist attractions (all revolving around the concept of being "The World's Biggest", i.e. The World's Biggest Cow) that the dude is obsessed with.
