At the all night graduation lock-in party, graduates set out to fulfill their unfinished business. For many, it's their last chance to live their high school dreams, but things inevitably take a turn for the Senior Class of Sherman Grove High School.

As karaoke commences, Roni makes a huge announcement only to be topped by the revelation of an even bigger secret. Bryce begins to lay the groundwork for his seduction of the gym teacher's wife. Christian urges Melinda to come out of her shell.