Invisible Waves is a thriller that takes place in three territories: Hong Kong, Thailand and Macau. It focuses on Kyoji, a hitman, who kills his lover, Seiko. Seiko is the wife of Wiwat, Kyoji's boss. When Wiwat learns of the affair, he hires his rival to kill Kyoji. Kyoji hides on a cruise ship bound for Thailand. On board he meets the mysterious Noi, and their destinies get more intricately interwoven than either of them could have imagined. As he tries to cope with his guilt, Kyoji feels the world is against him. And his problems only redouble and take on sinister proportions as he reaches Thailand. And then he learns the truth about the secretive Noi.