Mr. D has to provide the graduating class with a "Parting Gift". He decides that they will make the world biggest "fun box", that will be opened in 20 yrs. Ms Mason visits her Alma Mater with one of her students.
Gerry has the chance to coach the Varsity Boys' Basketball team but ends up in an awkward position when an over eager gift bearing dad insists that a reluctant Gerry should let his son play.
During a school assembly, Xavier teachers have flashbacks of the previous night's staff party where some members let a little too much lose. Xavier has a new Librarian with an unusual name.
After encountering an attractive police officer during a lock-down drill, Gerry is determined to see her again. Bobbi does her best to end her recurring fling with Robert, while Simon shows Frank how he could use science to protect Xavier.