Synopsis：The film follows the crew of the deep-sea submersible "Adventurer", a scientific expedition team, as they carry out a detection mission in an ocean trench. Suddenly struck by an mysterious underwater current, they plunge into a forbidden zone at the bottom of the sea. The four crew members lose contact, their fate unknown. China's rescue team aboard the "Dragon" is tasked with an urgent deep-sea rescue mission, embarking on a breathtaking and fantastical journey into the abyss...