Althea Ryz Fajardo (OC, 26 years old) has been an ELF for two years and eversince loved Lee Donghae of Super Junior. She considers him as her only inspiration so when Donghae annouced his relationship with a Korean actress, her world fell apart. Much more when Donghae exposed in public his plans of marriage. This made her leave her hometown and work as a doctor in Singapore to forget all about him. She worked so hard to forget all the pain she felt and to forget him. But after a year of pressured career as a doctor, she decided to take on a cruise as a way to relax and to finally work on her emotions for this actor whom she believes is already married...

Lee Donghae (Super Junior, 27 years old) has been a famous celebrity not only in South Korea but in the whole world. His entire life centered on showbusiness and has tried so hard not to publicize his personal relationships especially his girlfriends. When he fell for Son Eunseo, he decided to make it last so he announced his relationship with her in public and even planned to marry her. But after eight months, Eunseo left him. He tried to pretend that he's okay but Leeteuk knew that he wasn't. So when the group was given a vacation by the company, Leeteuk booked him a cruise trip for two weeks. At first he was hesitant about it but then he knew he needed a break and this was a way to let go...

Kevin Chang (OC, 27 years old) is a young Chinese businessman based in Singapore. His family run big business in the country and as the sole successor, he had a huge responsibility. And as the sole heir, his parents always send him to blind dates to find the girl suited for him but he never chose anyone. He dates many girls but never get serious with them. He is okay with having all the responsibilities in the business but he could never take being paired with anyone but his parents. He saw an advertisement of the cruise and got interested in it so he decided to take it and hoped to have the best time of his life alone...