Sentenced to life in prison, Theodore serves his time alone on a silent planet. With each passing day, his memories of Earth become foggier. When a new prisoner, Niyya, arrives on the planet, he is excited to have some company. However, she just wants to be left alone. Persistent, Theodore eventually wins her over, but a vague memory comes back to him: his real name might be Nathan Flanagan, the same name of the soldier who killed Niyya’s family when she was a child. Niyya pushes him to remember what he did, and Theodore suspects she might be messing with his head for nefarious reasons. As paranoia grows in both of them, they decide that their only chance of survival is to kill the other first. This leads to a battle across the eerie landscape of the silent planet.