This movie kept me on the edge of my seat the whole time. There's not a single moment where the seas are calm...it's literally nonstop violence, action, and intense moments. Being a lover of action, mystery, horror, and occasional love story on the side, this movie was thrilling. However, as the audience should know, be prepared for deaths and heartache. This is not your typical badgirl turning into a heroine into a lover type of movie. I personally really like sungjoon and his role. He kept her feeling sane and loved throughout the chaos that she faces overall great movie!