Green Day held an environmental concert in Springfield, but was met with indifference, and a member fell into the water and died. In order to mourn, the church held a mass ceremony. The Simpsons were late again, and the grandfather was suddenly possessed by a spirit and predicted the coming of a disaster. Bart was fined for running naked on a skateboard, and got help from his neighbor Flanders, and they became like father and son. Lisa met Colin, a like-minded Irish boy, and they fell in love. Homer's discarded nuclear waste and garbage seriously polluted the water resources. He bought a pig, which caused dissatisfaction from his wife Maggie, but his youngest daughter Maggie was happy about it. A strange creature with countless eyes made everyone realize the severity of the problem. At the residents' meeting, Lisa's environmental protection proposal was rejected, and the problem reached the ears of President Schwarzenegger. The government ordered the serious pollution of Springfield to be isolated. The villagers, awakened from their dream, then realized the importance of the environment. The angry people pointed the finger at the culprit of pollution - the Simpsons... This film is the first time that the long-running TV animation series "The Simpsons" which has been broadcast in the United States for 18 years since 1987 has landed on the big screen, causing a huge response among fans.