Jamie struggles with his first request as Indian Agent. Roger presides over an unusual funeral. Marsali gives birth. However, the joy is short lived when a discovery is made.

While visiting the Cherokee, Ian encounters a man from his past who dredges up painful memories of his time with the Mohawk. Jamie meets an Indian Agent who challenges his convictions, causing him to re-evaluate.

On the way to Scotland, Jamie is pulled back into the Revolutionary War. William is sent on a covert mission. Roger and Brianna struggle to adapt to life in the 1980s.

Jamie prepares to face British forces in battle. Roger and Brianna question Buck MacKenzie’s intentions in the 20th century. William fights in the First Battle of Saratoga.

Claire and Ian arrive in Philadelphia to help the ailing Henry Grey. Roger and Buck receive an unexpected clue in their search for Jemmy.

Brianna works to thwart a treacherous plan that endangers her family. A surprise encounter brings new understanding to Roger's journey in the past. Ian and Rachel take a big step in their relationship - as the Revolutionary war rears its head once again.