There are only a few weeks left of high school, and Jenna and her friends must make the most of it. Everyone has already figured out what they are going to do next year, but there is a sense that 'anything could happen' lingering in the air. The season is jam-packed with big senior year milestone moments - including senior pranks, prom and graduation, where Jenna will have to decide once and for all: are she and Matty meant to be?