A teachers' strike forces the Board of Education to enlist PTA members as substitute teachers. Realizing he preferred the old regime, Bart locks Skinner and Mrs. Krabappel in a room together until they can agree on the contract.
Bart creates a fake driver's license for himself and uses it to go on a spring break road trip with Milhouse, Nelson, and Martin. Meanwhile, Homer and Lisa bond after spending some quality time together at work.
After a riot at a sci-fi convention, Mayor Quimby hires Homer as his bodyguard, and Homer witnesses the rampant corruption in town politics. When Homer takes a stand, he runs afoul of the Springfield mafia.