Sgt. O'Connor was found dead in the river. Sully is nowhere to be found. Michaela believes that he survived and goes looking for him. Daniel comes to offer his help. Dorothy and Cloud Dancing share their first kiss.

Sully is found alive, but badly hurt. As Michaela nurses him back to health, she keeps him hidden from the army. Sully sneaks into the homestead one night to spend time with his wife.

Sully is wanted for treason and murder. In order to keep him safe, Michaela pretends that Sully is dead and has a memorial service for him. Hank and Jake find out Sully is alive. Cloud Dancing and Sully meet with Black Moon.

Michaela finds out that she is pregnant, but suffers a miscarriage. Without Sully there to comfort her, she has to turn to her friends.

Russian Princess Nizamoff (Natasha Andreichenko) who claims to see the future, tells everyone what they want to hear. Even Michaela is taken in by her.

Anthony's (Brandon Hammond) health deteriorates rapidly. Grace does not want to face the inevitable. Michaela struggles to tell Sully about the baby. Anthony loses his battle.

Marjorie brings a group of Temperance Women (opposed to alcohol consumption) to C.S. Jake goes on a dangerous drinking binge, when he thinks Hank and Teresa are seeing each other. Grace begins to drink heavily to numb her grief. Robert E. moves out.

A diptheria epidemic sweeps through C.S. Michaela performs a procedure that is not a proven cure. Becky (Haylie Johnson) dies.

Mrs. Quinn wants to take to the children to Boston with her. She also disapproves of Loren and Marjorie's relationship. Marjorie contracts the illness. The family sneaks Sully home for Thanksgiving.

Consumption hits Black Moon and his men. Black Moon agrees to surrender in exchange for safe passage of his men to protected land. Michaela negotiates the deal and asks also that Sully be pardoned.

Sully and Michaela are on their way home for Christmas, when they stop to help a couple inexperienced in the wilderness.

Michaela is shot at the clinic by a man that has a grievance with doctors. The physical wounds heal, but the emotional ones linger.

A male acquaintance of Colleen's from Denver, starts to call on her. When the man pushes himself on Colleen, Andrew protects her honor and admits his love for her.

Loneliness pervades C.S. as the Sweetheart's Dance approaches. Loren sells his store to Preston and plans to move to San Francisco. Jake proposes to Teresa.

Chinese immigrants set up camp. Dr. Quinn discovers a young woman (Yumi Iwami) posing as a man in order to practice medicine, which is forbidden in her culture. Her Grandfather (Robert Ito) is stunned, but supportive.

Hank captures Cloud Dancing and gets the army to send him to a reservation far away. Jake and Teresa marry, despite her aunt's (Carmen Zapata) disapproval.

Michaela worries about Brian's friendship with an eccentric man (Martin Von Hoffman) who thinks he is a bird.

U.S. Marshall Elias Burch (guest star Willie Nelson) asks Matthew, still a student of law, to defend him when he's accused of murder.

While away with Sully, Michaela falls and hits her head. She suffers a concussion. The pain of losing her baby is finally discussed and resolved with Sully's.

Robert E releases anger over his separation from Grace through his furious fists in the boxing ring, where he takes on an ailing champ (Richard Roundtree) who's on tour.

Dr. Mike's elation at Colleen's acceptance to medical school quickly turns to disappointment when Colleen chooses to marry Andrew instead. A bitter family argument erupts when Dr. Mike tells Colleen that she is less than overjoyed at her announcement and feels that the couple is rushing into marriage and should wait until Colleen completes medical school. Meanwhile, Robert E and Grace have wonderful news to share; the stock market crash hits Preston and the townsfolk hard; and Dorothy and Cloud Dancing reach a new level in their relationship. As part of the Network's 50th Anniversary celebration, classic footage of James Arness as legendary Marshal Matt Dillon of ""Gunsmoke"" is digitally integrated into this episode. When Jake breaks the news to Hank that he's accepted Preston's offer to buy his share of the Golden Nugget that would make him partners with the despised Preston,