Ann sets Leslie up on a blind date with a rude MRI technician, and Mark becomes jealous because he thinks Ann is saving another prospect for Leslie for herself. Meanwhile, Tom helps Ron find an assistant.
Leslie and Ron become adversaries when a dishonest candy company vies for a concessions contract, while everybody else in the department reluctantly helps Tom move out of his house.
Leslie and Justin try to reunite Leslie's Mom with an old flame for Valentine's Day, only to discover he's a total loon. And Justin's rude behavior during the entire episode causes Leslie to look at him in a new light.
Leslie is upset when Ron wins a coveted "Woman of the Year" award, Tom looks for investors for a new night club, and Andy considers moving into his own place.
Leslie puts together a task force at the mayor's request to catch a possum at the golf course, while Mark forces Ron to get his personal building up to code.
Leslie goes on a crusade to improve park safety after Jerry is mugged, which is later discovered to be a lie. Meanwhile, Ron tries to teach the office self-defense, but winds up injuring Andy instead.
Preparing the Summer Events Catalog, Leslie decides to take Ron and the past directors of the Parks Department out for a picnic lunch. Tom enlists the help of Ann and Mark to pose for the cover photo.
Leslie goes all out to save a gazebo at a mansion on the historical register from being destroyed, while April gets in trouble with Ron when she accidentally schedules 93 meetings for him on the same day.
Leslie struggles to stay awake and fill the overnight hours at a local telethon when Tom and celebrity guest Detlef Schrempf are sidetracked at a nightclub, and the answer to her problems could be a surprise marriage proposal.
Everyone is excited about celebrating April's 21st birthday except Leslie, who is preoccupied with the prospect of her budget being cut by the state auditor's office.
The government is shut down and the parks are closed, but Leslie tries to skirt the rules to hold a children's concert in the vacant lot. Meanwhile, will April's jealousy of Ann keep her from getting together with Andy?