There is a "Mad Pooper" running wild at the Belcher children's middle school and Tina finds herself on a mission to get to the "bottom" of the situation.

Gene and Courtney get their big break when they are asked to be the new hosts of the morning announcements, but their romantic history threatens to get in the way. Meanwhile, Tina's attempt to play Cupid goes tragically awry when she volunteers to spear-head the Valentine's Day carnation fundraiser.

When Tina is forced to listen to Spanish audio lessons in the library to improve her grade, she develops an unexpected crush. Meanwhile, Louise and Gene want to dunk Mr. Frond at the Wagstaff Spring Fair.

Louise realizes the new plan for student evaluating teachers has shifted the power at school from teacher to student; Bob and Linda find they don't agree on where their final resting place should be.