Alien Invasion: S.U.M.1 (2017) Timeline Explained – Every Event in Order

After discovering V.A.X.7's sketchbook and accessing the bunker's archives, S.U.M.1 becomes convinced that Exilium, a supposed safe haven for survivors, is actually a ploy by the elite to control dwindling resources. He theorizes that the entire evacuation mission is designed to consolidate remaining humans while the ruling class continues to thrive, revealing his paranoid interpretation of the mission's true purpose.

Foreshadowing: Earlier in the film, S.U.M.1 notices the dismissive attitude of his commanders and the lack of clear answers about the mission, planting seeds of distrust.

• exilium
• conspiracy
• evacuation
• elite resources
• mission truth

S.U.M.1 discovers a sketchbook and a radio inside V.A.X.7's locked locker. The sketchbook contains drawings of Outpost Cerberus and the defense circle Gram, suggesting V.A.X.7 had been investigating or planning something beyond his assigned duties. The radio allows S.U.M.1 to attempt communication with other soldiers, leading to his contact with K.E.R.4.

Foreshadowing: The bloodstain on the bunker wall earlier hinted that something happened to V.A.X.7, making this discovery a pivotal turning point.

• vax7
• sketchbook
• radio
• gram
• defense circle
• discovery

Doc represents S.U.M.1's last connection to sanity and companionship in his isolated existence. As his mental state deteriorates through hallucinations and paranoia, S.U.M.1 becomes convinced that even Doc is part of the conspiracy or deception surrounding him. In a tragic moment of complete madness, he kills the rat, the one creature that provided him comfort, symbolizing the total collapse of his grip on reality.

Foreshadowing: S.U.M.1's earlier hallucinations and his growing suspicion that everything around him is part of a larger deception set the stage for this tragic act.

• doc
• rat
• kill
• hallucination
• sanity
• companionship

S.U.M.1's breakdown results from multiple factors: extreme isolation during his 100-day deployment, the crushing loneliness amplified by dismissive communications from his superiors, and his growing suspicions about the mission's true nature. Key triggers include discovering a bloodstain suggesting V.A.X.7's death, finding his dog tag and a dead bird, and experiencing video file disappearances during power outages. The monotony of daily routines combined with these disturbing discoveries erodes his mental stability.

Foreshadowing: The daily alarms counting down his deployment time and his visions of carefree children contrast sharply with his grim reality, highlighting his deteriorating mental state.

• isolation
• paranoia
• mental breakdown
• hallucinations
• deployment
• vax7

The Nonsuch is the alien force that has devastated Earth and is systematically destroying human outposts. The film reveals they operate as coordinated operatives, one even commandeers S.U.M.1's vehicle at the end. Outposts like Lalops are attacked and destroyed, with survivors being warned through audio broadcasts to seek shelter at Exilium. The Nonsuch represents an overwhelming, seemingly unstoppable threat that has pushed humanity to the brink of extinction.

Foreshadowing: S.U.M.1 witnesses distant explosions from Outpost Lalops being attacked, and later sees the devastation at Gram, demonstrating the Nonsuch's methodical assault on human positions.

• nonsuch
• alien
• outpost attack
• invasion
• earth devastation

After killing Doc in his delusional state, S.U.M.1 emerges from the bunker naked and confronts what he believes is a monstrous Nonsuch creature. In his paranoid mind, the figure represents the embodiment of the conspiracy and deception he's been uncovering. Only after his brutal attack does he realize his victim was V.A.X.7, a man who apparently survived and was returning to the outpost. This horrifying realization cements S.U.M.1's descent into madness and his inability to distinguish reality from his paranoid fantasies.

Foreshadowing: S.U.M.1's earlier hallucinations and his belief that V.A.X.7 had died by suicide created the psychological foundation for this tragic misidentification.

• vax7
• attack
• monster
• madness
• misidentification
• confrontation

When S.U.M.1 reaches Gram, the defense circle mentioned in V.A.X.7's sketchbook, he discovers complete devastation. The tower is in ruins, debris covers the floor, and K.E.R.4 is mysteriously absent. The metallic smell of blood fills the air, and shattered windows reveal vehicles being driven by unseen Nonsuch forces. This scene confirms that Gram has fallen to the Nonsuch assault, eliminating what S.U.M.1 hoped might be a safe location or proof of his conspiracy theories.

Foreshadowing: V.A.X.7's sketchbook contained detailed drawings of Gram, suggesting it held significance to the previous soldier's investigations.

• gram
• defense circle
• devastation
• ker4
• ruins
• fall

After S.U.M.1 severs the high-voltage cable at the DC perimeter to trigger alarms and travels to Gram, the Nonsuch assault overwhelms the outpost. When he returns to the bunker, his wrist computer has been sabotaged by MAC, so his access codes fail. After three painstaking attempts, he finally breaks in, but the structural integrity has collapsed due to the Nonsuch onslaught. The supposed sanctuary transforms into a burial ground as the bunker is breached by a Nonsuch warrior, trapping S.U.M.1 with no means of escape.

Foreshadowing: MAC's earlier sabotage of S.U.M.1's 4x4 computer and the repeated failures of technology throughout the film foreshadowed this fatal moment.

• bunker
• death trap
• breach
• nonsuch
• access codes
• collapse

S.U.M.1 becomes convinced that Exilium, the promoted safe haven for refugees, isn't what it seems. Based on his discoveries in the bunker archives and his paranoid interpretation of events, he theorizes that the elite are using the evacuation narrative to control the remaining human population and resources. The constant audio broadcasts encouraging survivors to seek shelter at Exilium, combined with the apparent indifference of his commanders to his findings, fuel his belief that the entire evacuation mission serves a darker purpose.

Foreshadowing: The refugees fleeing toward Exilium and the vague promises of safety in the broadcasts contrast with the lack of concrete information provided to S.U.M.1.

• exilium
• safe haven
• lie
• evacuation
• elite
• conspiracy

MAC arrives at Outpost Cerberus during a storm, initially bringing relief to S.U.M.1 but quickly escalating to conflict. During the Nonsuch assault, MAC reappears to help S.U.M.1 but falls prey to a Nonsuch operative, the creature commandeers MAC's vehicle alongside him. K.E.R.4, who S.U.M.1 communicates with via radio, is found missing at Gram after the devastation, presumably captured or killed during the Nonsuch attack on that location.

Foreshadowing: MAC's insistence on accessing internal camera systems and historical archives, and his stories about past military encounters with the Nonsuch, established him as a key figure whose fate would be significant.

• mac
• ker4
• captured
• killed
• nonsuch
• death