When Barbara's church choir uses the gym for rehearsals, Ava notices tensions in the group. Jacob's eagerness for a full social calendar worries Gregory. Melissa and Janine investigate a new substitute.

Janine spearheads a pilot program that brings a librarian to Abbott; however, when friction arises with one of the teachers, it strains Janine's relationships with both parties. Meanwhile, both Melissa and Jacob deal with some big changes at home.