Last Sentinel (2023)

The ending of Last Sentinel (2023) concludes with Cassidy killing Sergeant Hendrichs and Baines, revealing herself as a spy working for the enemy continent. Sullivan discovers this truth after investigating the deaths and the mysterious relief ship. Cassidy and Sullivan are left as the last survivors, with the powerful doomsday weapon "Martha" disabled and no rescue or orders arriving. Cassidy remains at the outpost, isolated, guarding a weapon that may no longer have a purpose, symbolizing the bleak fate of humanity in this flooded, war-torn world.

In the final sequence of Last Sentinel, the tension that has been building among the four crew members--Sergeant Hendrichs, Corporal Cassidy, Sullivan, and Baines--reaches a violent climax. The story unfolds as follows:

1. Rising Suspicion and Conflict
   The crew is stationed on the Sentinel platform, armed with the nuclear weapon "Martha," amid a flooded Earth divided into two warring continents. They await relief that is months overdue. When a ghostly ship, the Aurora, appears drifting near the outpost, Hendrichs immediately suspects it is an enemy trap and insists on destroying it. Sullivan and Baines want to repair the ship and return to their continent, while Cassidy is caught in the middle. Hendrichs' paranoia grows, and he eventually destroys the Aurora, escalating tensions.

2. Hendrichs' Madness and Imprisonment
   Hendrichs becomes increasingly unstable, convinced the enemy is coming to annihilate them. His erratic behavior leads Sullivan and Baines to lock him in a storage room for everyone's safety. Hendrichs warns Sullivan that either Cassidy or Baines is a traitor responsible for the relief ship's destruction and disappearance.

3. Disappearance and Death of Hendrichs
   Hendrichs mysteriously disappears from his cell, and Cassidy claims he committed suicide. This event deepens the mistrust among the remaining crew. Sullivan begins investigating the situation, uncovering clues that point toward Cassidy's duplicity.

4. Baines' Death and Cassidy's Return
   Baines and Cassidy leave the outpost to salvage parts from the destroyed Aurora. Baines appears more stable and optimistic, but when Cassidy returns alone, she claims Baines killed himself. Sullivan grows suspicious and continues his investigation.

5. Revelation of Cassidy's Betrayal
   Sullivan discovers evidence that Cassidy is a spy working for the enemy continent. She had killed the crew of the Aurora to prevent the launch of "Martha," the doomsday weapon, which she wants for her own side. Cassidy also killed Hendrichs and Baines to cover her tracks and maintain control.

6. Final Confrontation and Aftermath
   A violent confrontation ensues between Cassidy and Sullivan. Hendrichs is already dead, and Baines is gone. Cassidy kills Sullivan's allies and attempts to secure the weapon for her continent. However, Sullivan survives long enough to expose her betrayal.

7. Cassidy Alone, Guarding a Lost Cause
   The film closes with Cassidy alone on the Sentinel platform, staring out at the endless ocean. No rescue arrives, no orders come through, and the war seems to have ended or become irrelevant. She remains the last sentinel, guarding a weapon that may never be used, symbolizing the futility and isolation of their situation.

Fates of Main Characters at the End:

• Cassidy: Revealed as a spy and the last survivor, she remains on the outpost, isolated and guarding the weapon.
• Sullivan: Killed by Cassidy during the final conflict.
• Hendrichs: Killed (or possibly forced to suicide) by Cassidy after becoming unstable and suspecting betrayal.
• Baines: Killed by Cassidy or dead by suicide, as claimed by Cassidy.

This ending emphasizes the themes of mistrust, isolation, and the collapse of human order in a devastated world, with Cassidy embodying the ambiguous morality and survival instinct amid the ruins of war and climate disaster.

No, Last Sentinel does not include a post-credits scene. The film ends definitively with Cassidy's isolation, leaving the audience with a sense of unresolved tension and existential dread. The final moments show Cassidy alone in the station, staring out at the endless ocean with no rescue coming and no orders arriving. The haunting implication is that humanity may already be gone and she is guarding a weapon that no longer has a purpose. The movie closes on her isolated figure as the last sentinel of a world that no longer exists, and there is nothing that follows after the credits roll.

The 2023 movie Last Sentinel is rated R and is not family friendly for children or sensitive viewers.

Potentially objectionable or upsetting aspects include:

• Mild violence and gore, including tense and intense scenes.
• Moderate profanity, with frequent use of strong language such as the F-word.
• Mild alcohol use and smoking.
• Some mild frightening or intense moments that may be unsettling for sensitive viewers.
• Scenes with partial nudity (e.g., a woman stripping down to her bra) and a failed assault attempt, though no explicit sexual content or full nudity is shown.

There is no sexual nudity, but the mature language, mild violence, and tense atmosphere make it unsuitable for children or those sensitive to these elements.