Gabe is left in charge of Charlie while working on a school project with his frenemy, Jo. The two must work together, not only to complete their assignment, but also to take care of Charlie, whose constant need for attention is distracting them from their project. Meanwhile, Teddy tricks a scared PJ into going to the dentist, but ends up breaking her own tooth in the process. Bob tries to surprise Amy with a spa get-away, but gets called away on an emergency extermination job.