The first prize of priority registration engulfs Greendale Community College in a Spring Fling paintball war.
Michael suspects Donna is cheating on him and puts P.I. Dwight Schrute on the case. Meanwhile, Andy is frustrated when no one takes his customer's complaint seriously.
A straight-laced propane salesman in Arlen, Texas tries to deal with the wacky antics of his family and friends, while also trying to keep his son in line.
A cabin burns down in the woods revealing two bodies, one of a modern-day witch and one from the days of the Salem Witch Trials leading Booth and Brennan into the world of Wicca to find a killer. Meanwhile, when Hodgins' reckless driving gets him and Angela arrested and thrown in jail, Sweets and intern Clark Edison step into unfamiliar territory to help out the team
Drama surges at LuAnn's charity event when Jill and Alex feud. In addition, LuAnn, Kelly, Jill and Sonja bond over yoga; LuAnn reflects on her taxing year; Bethenny flies to Los Angeles to be with her ill father; and LuAnn reenters the dating scene.
A mother thought to be grieving for the loss of her family three years ago becomes a suspect in a CSI investigation.
Liz Lemon meets her mother's old flame, while Jack Donaghy's mother, Colleen, gets tangled in his relationships with Avery Jessup and high school love, Nancy Donovan. Jenna's mother, Verna returns, while Tracy learns a lesson from his "mom".
Bailey preps the team with mandatory sensitivity training prior to admitting a 700-pound patient with compounded medical issues, and the case proves to be challenging in every sense of the word. Meanwhile Derek has to come face to face with a former patient's husband in a wrongful death deposition, and spending time with a heart patient's daughter opens up some old wounds for Cristina.
Naomi begs Fife to use his still experimental treatment to help William's advanced ALS. Violet and Amelia treat a woman with a brain tumor, while Sheldon decides to vie for Charlotte's affections.
Mark does everything in his power to protect Gabriel, who is the bridge between Dyson Frost and the Global Blackout. Aaron locates his daughter's captors and puts his life on the line in order to rescue her, while Simon comes face to face with the head of the nefarious organization that may be responsible for the blackout.
An apparently African skeleton, unearthed near a medieval English monastery, pushes Professor Sue Black's forensics team to its limits. Bone analysis offers clues about the true origins of the mysterious skeleton and facial reconstruction painstakingly reveals his face, not seen for centuries. The historical trail points to new evidence about British ancestry and the case takes an unexpected twist when they discover the tragic truth about how he died.
Bummer is having a breakdown, so the groms teach him to be chill and relaxed. But they do too good of a job and Bummer's mellowness gets him fired. Lo gets a lesson from her tough-as-nails Daddy on how to deal with her daycare kids. Meanwhile, Johnny finally scores a date with Emma, but it doesn't go the way he planned.
Dad struggles against the conspiracy theories that are taking over the family.
U.S. Marshal Mary Shannon must hunt down witnesses for federal cases in the witness protection program while also managing a rather dysfunctional family and her own personal life.
A divorced mom tries to keep pace with everyone around her.
Timothy and his wife embark on a sea-going journey along Britain's coast, encountering local characters and experiencing the daily life at sea as they navigate through ports.
At Padua High, newcomers Kat and Bianca Stratford attempt to navigate the popular crowd.