The school lunch lady, a secret crime fighter, sets out to stop a group of librarians bent on destroying a shipment of video games, while a group of students known as the Breakfast Bunch provides back-up.

When the crime-fighting school lunch lady works as the cook at summer camp, she investigates the mystery of the legendary swamp monster.

Lunch Lady, a secret crime fighter, accompanies the Breakfast Bunch on a class trip to an art museum, but when Dee, Hector, and Terrence begin to think there is something strange afoot, she suspects nothing.

When eccentric photographer Stefani DePino comes to Thompson Brook to take school pictures in the midst of an acne epidemic, Lunch Lady, Betty, and the Breakfast Bunch learn that Stefani is using them to break into the world of high fashion.

Lunch Lady and Betty have been fired but the Breakfast Bunch convinces them to return and stop the school's new superintendent and her minions from carrying out an evil plan for revenge.