The police chief faces struggles in both his personal and professional life, as the third anniversary of the departure approaches.
Kevin goes to see a therapist, after he has some unsettling encounters. Meg makes a decision about her future. Tom and Christine are left in a dicey situation. Jill and Aimee are interested as to where Carrie is.
Reverend Jamison is struggling with people referring to the departed as heroes. He is faced with death threats and a diminishing attendance at his sermons and then finds out he may lose his church due to foreclosure.
A holiday display goes missing, sending Kevin scurrying to find out who is responsible. Tom and Christine run into trouble at a hospital and on the road. Kevin retrieves a surprise detainee from a neighboring police station, and receives unexpected visitors at home. The Guilty Remnant put its stamp on the holiday season.
Laurie's resolve is put to the test in the wake of a brutal hate crime. After his latest initiatives to maintain the peace in Mapleton fall short, Kevin turns down an outside offer to rid the town of its problems. Matt brings his pulpit to the street. Meg takes on a new role.
Nora goes to New York for the second annual Departure Related Occupations and Practices conference, but discovers that someone else has her ID badge, so she searches the convention as a “Guest,” and has encounters with a salesman, an author and a rogue attendee.
After learning his father has escaped the psychiatric hospital, Kevin orders an APB to track him down. Jill attempts to break an endurance record. Holed up in Indiana, a disillusioned Tom makes an unsettling discovery.
Kevin fears he's losing touch with reality after inexplicably finding himself in a difficult situation involving Patti Levin, a leader of the Guilty Remnant. Meg loses control during another encounter with Matt; Jill confronts Aimee about her relationship with Kevin; Nora stands up to Laurie, and finds her privacy invaded.
Kevin tries to suppress his bad habits while tracking down a marauding deer in Mapleton. Laurie receives not-unexpected news amidst a rising sense of foreboding. Tom connects with his past, against his better judgment. Nora has a job interview; Kevin Senior receives an honor.
An unexpected ally helps Kevin get out of a jam near the town of Cairo. Meanwhile, an elaborate Memorial Day initiative by the Guilty Remnant plunges Mapleton into chaos. Holy Wayne grants a final wish; Tom copes with his new reality; Nora makes a life-changing decision.