What happens when three guys discover the secret of their girlfriends?

Will they accept them for who they are?

MEET THE CHARACTERS:

Jessica Jung

Jessica Jung is the cold Ice Princess. She has the ability to control ice: freezing any liquid or source. Her and her two best friends were transformed as a mermaid at the age of twelve when their families vacationed on an island together. She is the oldest of them and looks out for them. Jessica takes care of Tiffany and Sunny like her own sisters. People call her an Ice Princess for her cold attitude, but she's warm-hearted when you get to know her. Jessica is currently in a relationship with Lee Donghae, whom she's been dating for a year.

Tiffany Hwang

Tiffany Hwang is the aggressive Eye-Smiler. She has the ability to control fire: heat any liquid or source. Her and her two best friends were transformed into mermaids at the age of twelve when their families vacationed together on an island. She's the middle of the three. Tiffany has a famous eye-smile, but she can be tough when it comes to defending herself and her friends; that's why she's aggressive alot. (They get teased for dressing so hott.) Tiffany is currently in a relationship with Choi Siwon, whom she's been dating for around ten months.

Lee Soonkyu

Lee Soonkyu, or as she prefers to be called Sunny, is the bubbly Aegyo Queen. She has the ability to control water: manipulate water. Her and her best friends were transformed into mermaids at the age of twelve when their familes vacationed together on an island. She is the youngest of the three, but she acts as mature as they do. Her aegyo can be irresistable, but it can't be broken by Jessica or Tiffany. Her kindness is as big as her aegyo and she's always happy. Sunny is currently in an up-and-down relationship with Lee Sungmin, whom she's been roller coastering with for six months. Currently, she's single.

Lee Donghae

Lee Donghae is the handsome Fishy Prince. He's very warm and sweet. His charm is being sweet. He's sensitve and naive, but hides it. Donghae cares for his friends and family and watches out for them. His best friends are Siwon and Sungmin. He's the oldest of the three and watches out for them like his own brothers. He's called a Fish because of his looks, and he just likes being called a prince. Donghae is currently in a relationship with Jessica Jung, whom he's been with for a year.

Choi Siwon

Choi Siwon is the hot-headed heart throb. He's the tallest of the three best friends and the middle of them. He's mature and gentleman like. Sometimes they call him Horse for his tallness. His charm is being a hot-head. He loves looking at himself in the mirror and talking about his looks. They think he's full of himself. He's got irresistable abs and looks that any girl falls for. Siwon is currently in a relationship with Tiffany Hwang, whom he's been with for ten months.

Lee Sungmin

Lee Sungmin is the melting Aegyo King. He's the youngest of the three friends. He has the same aegyo as his on-and-off girlfriend, but it's ineffective on Donghae and Siwon. He's very calm and super kind. He likes to smile to make people happy, but it sometimes annoys Donghae and Siwon when he can't stop smiling. His charm is his aegyo, which makes all the girls melt. Sungmin is currently in an up-and-down relationship with Lee Sunny, whom he's been roller coastering with for six months. Currently, he's single.