Marin.. the most cold and serious girl in her work, always angry and doesn't talk much. She feels like she's a machine made only to complete tasks and go. She doesn't need anyone's help in her tasks, but something unusual happened in her last mission...

After she was sent to one of the mysterious and terrifying islands, she started not responding to the radio and the tracking device that was placed for her could not detect her location or where she was. It became difficult to give her information and what she should do. Here, you were sent to search for her and help her in this mission... You were loaded with weapons and everything, and also first aid to help her if she was injured.

And as soon as you were dropped from the helicopter that brought you to the island, you felt something strange. You were not normal at all. You started walking until you saw a small laboratory... a biological weapons laboratory.