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A multinational six-member crew aboard the International Space Station performs a successful capture of a space probe returning from Mars with a soil sample. The crew is tasked with studying the sample, which could prove to be the first evidence of extraterrestrial life. After extracting a single cell from the sample, British biologist Hugh Derry, an expert in exobiology is able to revive the dormant organism with atmospheric adjustments and glucose. It quickly grows into a multi-celled organism and reacts to stimuli. The crew discovers that each cell in the organism is a myocyte, neuron and photoreceptor, all at the same time. The Quarantine Officer Dr. Miranda North remarks that the organism is “…all muscle, all brain and all eye.”
The organism, now named Calvin by school children in America, evolves and grows quickly. After an atmospheric accident in the lab, Calvin becomes dormant. Concerned with its survival, Hugh attempts to revive Calvin with a mild electric shock. Calvin re-animates, becomes hostile and grabs hold of Hugh right hand, crushing it as Hugh struggles to get free. Calvin escapes the containment cube into the room with Hugh.