Luke and Manny have their first day of high school; Claire returns to the workforce; Mitch juggles an important meeting and Lily's first day of preschool.
Claire wants to give Haley and Alex a great experience on Take your Daughter to Work Day but employees make things difficult; Jay has to help out at Joe's preschool when Gloria has jury duty; Mitch and Cam cannot agree on who to invite to a party.
When Phil thinks Luke is giving him the cold shoulder, Andy becomes Phil's new right-hand man; Jay is put in a tough spot when it is suspected that Joe is allergic to Stella; Mitchell does some freelance legal work at Jay's company.
Christa must ignore her personal feelings as she and Grace treat a patient who says he was abused at a camp for troubled teenagers; Campbell surprises Grace by asking her out on a date.