Teddy Walker is a successful salesman whose life takes an unexpected turn when he accidentally blows up his place of employment. Forced to attend night school to get his GED, Teddy soon finds himself dealing with a group of misfit students, his former high school nemesis and a feisty teacher who doesn't think he's too bright.
Eloise, having been relieved of maid of honor duties after being unceremoniously dumped by the best man via text, decides to attend the wedding anyway – only to find herself seated with five fellow-unwanted guests at the dreaded Table 19.