When his arrival brings violence to a French convent, Daryl joins a nun's quest to ensure that a mysterious boy reaches a distant religious community.
Dodging both the living and the dead, Daryl and his charges trek northward and take shelter in a school. Isabelle remembers life before the outbreak.
Codron helps Genet hunt for Daryl, who has arrived in Paris to look for passage back to the States. A secret emerges about Laurent's parentage.
Genet's forces close in. Daryl and a group of believers struggle to rescue Laurent and resume the journey north. Isabelle makes a sacrifice.
On the road again, Daryl recalls the events that brought him to France. Genet springs a trap with dire consequences for Isabelle, Laurent and others.
Daryl confronts the horror of artificially enhanced walkers. Leaving France for home proves harder than expected. In Maine, an old friend resurfaces.