As the Roberts family heads to Costa Rica to investigate a mermaid legend, Barbie takes on a summer job at a water park run by a devious boss.

Chun and Pat Boung meet unexpectedly in a mall and Pat Boung and her friend saves Chun from a mafia group in Thailand while he was visiting on a business trip. He returns home safely to Hong Kong and is just amazed and intrigued by her. So he sends one of his men to find out about this girl. Chun is now the leader of a mafia, but was only inherited into the mafia because he was an orphan and he was his adopted sister's father. He becomes loyal and shows leadership. Pat Boung's dad is a very known man in Thai society, but he unfortunately gets hooked onto gambling in Chun's casino in Hong Kong. Chuun figures out that the man was Pat Boung's father. He gets the man into big debt with them, he manipulates Pat Boung's father to sell her to him and he promises that he will not harm his daughter in anyway and seemed liked a good man to Pat Boung's father. So he gets the money he sold his daughter for thinking that he would gamble it and get all the money he owned back and then the deal could be forgotten and he could have his daughter back. At this time, he loses all the money again and ends up in bigger debt than before but this time with no daughter. He returns to Thailand, but before he gets there Chun sends his men for Pat Boung in Thailand. Chun's bodyguards Chen Hao and Ban are sent to get Pak Boung but in the process of going back to Hong Kong, Pak Boung manages to escape the two bodyguards and she is saved by Min. She thinks she has nothing left in her life because of what her father has done and that they are so far in debt she is a lost soul. Min decides to take Pak Boung in and take care her as if she was his wife but what Pat Boung and Min doesn't know is that Chun's bodyguard already found them. She falls in love with him because he is the only one that is there that cares for her. She and Min fall in love, but that doesn't stop Chun. He finds her and takes her from Min. Min goes to Hong Kong and tries to get Pat Boung back in numerous times, but doesn't succeed. During the process while Pat Boung is forced to live with this "cold hearted" man, she tries every available way to escape Chun to get back to Min. In the process of trying to escape from Chun, she sees that he is not just cold hearted man that he also a very caring man. Unable to get close and help Pak Boung, Min decides to manipulate Chun's little sister Gye' Yhong to get back at Chun for taking Pak Boung from him. As time goes by, Pak Boung starts to fall in love with Chun as Yong starting to fall in love with Min but just as their relationships starts to mend its gets even more complicated when Chun's childhood lover, Lilly, comes back and stir up more trouble for all the couples...