We Bury the Dead

After the United States accidentally detonates an experimental weapon off the Eastern coast of Tasmania, the city of Hobart is destroyed, and victims on the island not caught in the immediate blast are rendered brain dead. Soon it is found that some of the brain dead are regaining motor function, becoming undead, with some of them becoming violent. American physiotherapist Ava Newman, whose husband Mitch was on a business trip in Woodbridge, volunteers as part of an Australian military effort to retrieve and dispose of the bodies of the population. Ava is assigned to the northern part of the island, far from Woodbridge, retrieving bodies and alerting soldiers to kill any undead who wake up.

Ava is placed on a team with Clay, another volunteer, and after finding a motorcycle in a garage, the two agree to abandon their unit and drive across Tasmania to find Mitch. While resting at an abandoned petrol station, the two are attacked by an undead, but saved by a lone soldier named Riley. Riley locks Ava in a toilet and questions Clay. Ava falls asleep and reminisces about Mitch, and after hours pass, Riley wakes her up and informs her that Clay ran away.

Riley offers to take Ava to Woodbridge, but instead takes her to his house for a meal. After the two discuss their spouses who were victims of the weapon detonation, Riley requests that Ava wear his wife Katie's clothes and dance with him. Ava obliges, and the two dance and fantasize about being each other's partners, but Riley becomes violent when he realizes Ava has not taken her wedding ring off as he requested. Ava escapes and finds Katie's pregnant undead corpse in their bed, surrounded by a shrine. Riley tells Ava that "He's alive, I felt him kick". Ava escapes out the window and runs into the shed, where she finds many chained undead, with notes from Riley researching their behavior. Riley tells Ava he believes the reason only some come back to life is that they are the ones with unfinished business. When Riley indicates he has not forgiven her for failing to wear Katie's ring, Ava kills him and uses his car to escape. As she does, she observes that Katie has awoken.

Ava makes her way to Woodbridge, and stops to rest in a camper van, removing the corpses of the family of four outside. Later that night, Ava is awakened by the corpse of the father coming to life and using a shovel to dig a grave for himself and the other three corpses. The undead driver notices Ava, but does not attack her, and continues to calmly dig the grave. Ava helps the driver bury the bodies in the grave, and the driver allows Ava to kill him with the shovel before she finishes filling the grave and leaves.

Through flashbacks, it is revealed that tensions arose in Ava and Mitch's marriage due to a failure to conceive a child, leading Ava to have an affair which Mitch discovered shortly before leaving for his business trip. Ava eventually makes it to the resort where Mitch was staying, but finds that Mitch did not awake from death and had cheated on her with a coworker before he died. Clay finds Ava at the hotel, and they bond. Clay tells Ava that his wife and daughter want nothing to do with him, and that he joined up to prove to them he is not selfish. After spending the night, the two place Mitch's body in a motorboat that they set on fire as they send it out to sea.

As the two make their way back north, they encounter Katie who has given birth. Katie turns and walks away from Ava, Clay, and the sound of the baby. Ava and Clay find her newborn in nearby stone ruins, having been born alive and entirely healthy; lacking the corpse-like features of the undead. Ava picks up the infant crying tears of joy.