Deep in the Mariana Trench, renowned oceanographer Dr. Helena Langford and her team discover a dormant, ancient leviathan. In their quest for groundbreaking scientific knowledge, they retrieve a tissue sample. But aboard their vessel, the tissue exhibits terrifying properties. It regenerates at an alarming rate, absorbing ship materials and crew members. Named "Levi", the monstrous entity becomes an unstoppable force, pushing the team to their limits. As the crew fights for survival, they're forced to make unthinkable sacrifices, driving Levi back to the icy depths from whence it came. The ordeal stands as a chilling testament to the dangers of awakening the ancient mysteries of the deep.