As the apocalypse strikes, a young woman with emerging healing abilities survives a critical infection by staying in a shelter. Serving as a combat medic, she gradually learns to heal others' injuries but struggles to control the aberrant virus completely. Her abilities evolve dramatically after absorbing blood from Joel, boosting her power to treat severe mutations and mental contamination. Joel's associate offers her a contract to become their personal medic, prompting her to demand three days to decide. The episode ends with rising stakes as she faces the pressure to commit while mastering her new, unpredictable powers.