Nothing is going right for Kevin Woo. His best friend and long time secret crush is getting married to the guy of her dreams and all he can do is stand by and watch. And to add insult to injury, he unwillingly accepts to help in the wedding process. 

Eli Kim, the player and non-serious type of guy is facing a huge dilemma. His girlfriend of two years wants to tie the knot and start a family...something Eli never thought of doing...ever. Now he has to choose between his relationship or a lifetime of dread and misery. 

Yeo Hoonmin is in love but being the shy and timid guy he is, he can't summon the courage to confess his feelings not that he will since he believes that he isn't the right person for her or for anyone for that matter. 

Jessica Jung is one of Yoona's happy bridesmaid. She's almost as happy and excited as the bride herslef but when she is forced to work with her ex all her joy and excitement is instantly sapped away but not wanting to upset Yoona she is force to fake a smile no matter how annoyed or pissed she may be. 

Im Yoona, the first of her friends to get married and she can't wait for her special day to come. With the help of eight of her closest girl friends and Kevin, her childhood friend, she believes that there really is a happy ending... that is until another love oconfession screws everything up. 

Lee Soonkyu has always dreamed of having a famiily of her own and after two years she thought Eli was the one despite knowing his past relationships and outlook on serious relationships. After hinting about marriage and a family she has scared him away and her dream may just stay as a dream. 

Tiffany Hwang has gotten her heart broken so many times she has officially concluded that she will never find Mr. Right and has officially given up. What she doesn't realize is that the guy for her has been in front of her the whole time but he is the kind of guy she wounldn't even look twice at.