When Laurel returns to Washington, D.C., to work for her brother, Sen. Luke Healy, she discovers that budgetary disagreements have halted the government, and mysterious bugs are consuming the brains of Congress members and Capitol Hill staffers.
Laurel and Rochelle try to persuade Laurel's friend Abby to get an MRI so they can uncover the real cause of the strange behavior taking over Washington, D.C. Also, Luke attempts to reopen the government through a secret deal with the Republicans.
Laurel asks her brother, Luke, for his help to get the Centers for Disease Control and Prevention to investigate the bugs, but he insists she first consult Dr. Joanne Alaimo, a leading entomologist, for her perspective on the invasion. Also, Laurel's relationship with Anthony takes a drastic turn.
Senator Red Wheatus hires a special investigator to dig into the Healy family's financial and personal history. Also, when Gareth learns some sordid details about Laurel's romantic past, it puts a strain on their budding relationship.
Laurel must work alongside an old boyfriend, Ben Valderrama, when Luke enlists her help in putting together a political documentary to support his anti-war initiative. Also, Laurel worries about the health of Luke and Germaine's baby.
When Laurel discovers that a senate bill is not what it appears, she implores Luke to help, leading to a dramatic Senate sit-in. Also, Red and Ella battle for control of the bug agenda, and Laurel questions whether or not she should leave Washington, D.C. for good
Laurel discovers the secret to driving the bugs out of a person's brain and tests the tactic on her father. Armed with new knowledge, Laurel and Gareth attempt to expel the Queen bug out of Red's head once and for all. Laurel and Gareth progress in their romantic relationship.