In the Kingdom, Nabila carries Mariam while she and Jerry spend time with their children. At night, Jerry carries his daughter from her crib to hold her as Nabila sleeps on their bed.
Nabila carries Mariam as Ezekiel gives his speech and announces the start of the fair. In the fair, she is carried by Nabila as her parents walk around. At night, she is taken by her family to the theater to watch the movie. The next day, Mariam is carried by Nabila as Siddiq addresses the crowd about the missing attendees.
Several months after the fair massacre, the Kingdommers are forced to abandon their fallen community due to an incoming blizzard and move to the Hilltop. When snow starts falling later that day, Mariam and the convoy is forced to take shelter inside the Sanctuary for the night where she and her family rest and stay warm.
Later that night, the convoy leaves the factory and is forced to cross into Alpha's territory. When they encounter a frozen lake, members of the group kill walkers that emerge from the snowbanks before the whole convoy manages to escape safely across the ice where Mariam and her siblings are embraced by their parents, who are glad for their safety. The next morning, the convoy finally arrives at the Hilltop where Mariam spends time with her family in their new community.
Inside the Barrington House, Mariam is held by her mother as she sits on the stairs along with Adam and a couple other caretakers. Later, Mariam is among the children and parents to be evacuated from Hilltop. However, the caravan is prevented from reaching Oceanside after reaching a roadblock consisting of a fallen tree, the doings of the Whisperers. The caravan turns back to Hilltop, along with the bodies of murdered scouts Felix and Penny. That night, she takes refuge inside Hilltop along with her mother and siblings as well as with the other children and civilians as the coalition soldiers fight against the Whisperers and their horde.
Mariam is among a group of survivors consisting of Rosita, Daryl, Jerry, Nabila, Dianne, two Hilltop women, and two Alexandrian soldiers trudging through the wilderness as they attempt to reach the rendezvous point to find Ezekiel, Earl, and the children, including Jerry and Nabila's kids. Due to Nabila being injured in the attack, a woman cares for Mariam and carries her as Jerry aids his injured wife.
Mariam will appear in this episode.
- Mariam is the ninth known child in the TV Series born into the apocalypse, the first being Judith Grimes, the second and third being two unnamed infants living at the Kingdom, the fourth being Gracie, the fifth being Hershel Rhee, the sixth being R.J. Grimes, the seventh being her brother Ezra, the eighth being her sister Aliyah, the tenth being Adam Sutton, and the eleventh being Socorro Espinosa.