Bart's class goes on a field trip to the Nuclear Power Plant. While riding through the plant in an electric cart, he spots Bart and waves to him, sending him crashing into a radioactive pipe causing the plant to shut down. Homer is fired for safety violations. Depressed and unable to find a new job, he sets off in the middle of the night to jump off a bridge. The family gets there just in time but almost gets hit by a truck. Homer pulls them out of the way in time. Homer embarks on a public safety crusade to make the town a safe place, putting road signs up everywhere. Mr. Burns recognizes his work and invites him back to the power plant.
This was a below average episode. I just plain didnt like the episode as I usually like the Simpsons. I just found this episode boring. Give it a watch if you want but I wouldnt recommend it.