Bud and Doyle are two losers who are doing nothing with their lives. Both of their girlfriends are actively involved in saving the environment| but the two friends could care less about saving the Earth. One day| when a group of scientists begin a mission to live inside a "Bio-Dome" for a year without outside contact| Bud and Doyle mistakingly become part of the project themselves. The two must then learn how to protect the Earth and help the scientists complete their mission.