When the eighth-grade science class participates in an egg drop activity, Janine insists her second-grade class joins in. Even when the science teacher and Gregory tell her that her students aren’t ready for physics lessons, Janine is determined to prove them wrong. Then, when Barbara is shocked at the clothing one of her student’s parents wears, she learns to not judge someone solely based on their appearance.

Abbott Elementary rallies together to fight the threat from Legendary Charter Schools. Ava pitches a festival to draw parents to school and collect their signatures for a petition. However, Draemond shows up with the intention of derailing the event.

When it’s revealed that a student in Jacob’s class has ringworm, the faculty must band together to stop it from spreading through the entire school.

During Abbott's 100th day of school celebrations, Barbara receives a surprise from her daughter. Jacob and Mr. Johnson join forces to conduct a search party.

A debate over a controversial book leads Ava to remove it from the library, but some parents push for its return.

Ava and the Abbott teachers go to the district to plead for Ava’s job back. Meanwhile, Gregory handles duties as interim principal.