<<Dr. Unger (Embeth Davidtz), CEO of Europa Ventures, narrates the story of the Europa One mission. Six astronauts embark on a privately funded mission to Europa, a moon of Jupiter, to find potential sources of life.
The ship lands safely, but misses its original target zone. The crew drills through the ice and releases a probe into the underlying sea. Blok, who is sleep-deprived and eliciting concern in the rest of the crew, sees a light outside the ship. However, he is unable to record it or otherwise convince the crew of its occurrence. The probe is struck by an unknown lighted object, and contact with it is lost.
Petrovna insists on collecting samples on Europa's surface. After a crew vote, she embarks on a walk outside. Analyzing the samples, Luxembourg discovers traces of a single-celled organism. As communication is disrupted by increasing radiation, Petrovna sees a blue light in the distance; she decides to investigate it. She approaches the light glowing through the ice; the ice below her breaks and she falls through. As she descends into the depths, only her head camera continues to show footage, displaying her terrified face as the blue bioluminescence is reflected in her eyes, before cutting out.
The crew agrees to leave in order to bring their discovery back to Earth, but the engines malfunction. As the ship hurtles back to Europa's surface, Xu unbuckles from his seat to remove water shielding to reduce the impact speed. Remarkably, the ship crashes at the originally-targeted landing site. On impact, Xu is killed, and the ship is damaged, leaking oxygen and losing heat. It begins to sink into the ice.
Blok and Luxembourg suit up to make repairs outside the ship. Luxembourg tries to descend, but falls through the ice. Blok knows that there is no chance that he alone will be able to repair the ship before it sinks. Instead, he manages to fix the communication system, at the expense of turning off the life support systems, just before the same blue light Petrovna saw approaches and he appears to fall through the ice as well.
Dasque re-establishes communication with Earth. All the collected images and data that have been saved over the blackout months are sent, just as the ice cracks and the ship begins to sink. Alone and anticipating her death, Dasque opens the airlock to flood the ship in hopes of revealing the source of the light. As the water rises to the cockpit, she sees a tentacled, bioluminescent creature rising toward her, before the camera cuts out.
In the epilogue, Unger confirms that the crew of Europa had discovered life, and exceeded every expectation, as the footage plays from an earlier scene of the crew posing in front of the camera.>>