Marin may have jumped the gun when she moves into her house before it's ready, Patrick feels the pinch of being the man and providing for everything, and Theresa feels uncomfortable when Sara helps out at the bar while Ben is recuperating.
Marin can't light a fire in her new home so she invites Cash to be her house mate. Jack proposes to Lynn after going to Lamaze class with her. This upsets Marin, unsurprisingly. Sara meets a new guy at her EMT class. Patrick goes to New York with Annie to meet her family and ask for her father's permission to marry her.
Marin goes in search of a secret ingredient in the woods and ends up spending the night there with Jack, Sara goes to court to retain custody of her son with the deck stacked against her, and Patrick looks for meaning in his name.
Jack worries about Marin as they start counting the days until his departure, Eric faces a choice between love and congregation, and Annie begins experiencing the first of several disasters foretold by Mai surrounding her wedding
While Jack fights for his life, and those of his fellow crewmen, Marin worries his commitment has faded; Patrick's personality has changed dramatically; and Jane faces the consequences of life with a plow man