Donghae is a baseball player and has known Yoona since he was little. There group had three people. Donghae, Yoona, and Jonghyun. They would do everything together. Later Jonghyun has to leave to go to Japan for a long time, but he plans on coming back. Yoona only thinks of Donghae as a good friend to lean on, but what if he wants to be more than friends? Then when Yoona finds a new friend Donghae hates him because of the way he is. Taecyeon is the new friend that Yoona meets. They seem to make a perfect couple and Taecyeon plays baseball just like Donghae. Jonghyun, after a good 13 years  tries to come back to meet his grown up friends. But what if someone or something is holding him back? Will Tacyeon steal Donghae's best friend? Or will Donghae keep things the way they were back then?