On the last day of school before winter break, Janine is convinced by her friend to go to a popular hookah club where she runs into unexpected colleagues. Elsewhere, Jacob crashes Barbara and Melissa's traditional holiday dinner and in the process begins to learn the true meaning of Christmas.

Barbara organizes a candy-selling fundraiser to raise money for a school field trip to the science museum. When sales don’t go as planned, Ava steps in to teach the students new, unconventional selling tactics. Elsewhere, Mr. Johnson and Jacob butt heads about how to take care of a cat found in the janitor’s closet.

On Valentine’s Day, the Abbott teachers discuss their relationships and plans for the holiday. Janine finds out one of her students has a crush on her and when turning to a colleague for advice, she inadvertently learns a secret about another teacher. Elsewhere, Ava sits in on Jacob’s Black History class after receiving a complaint

Jacob secures a visit from a mural arts program for his students but doesn’t agree with their chosen design and attempts to influence their decision. Barbara and Melissa learn parents are petitioning to turn Abbott into a Legendary charter school.

Abbott Elementary takes a field trip to the Franklin Institute; Gregory is eager to spend time with a reluctant Janine; Ava teaches the students about aliens, which leads to chaos.