Lee Hwayoung is the son of a famous CEO, and is always talked about, and his secret dream is studying about plants. Kim Yonghyun is a student council member who is the son of famous chefs, he's color-blind, but he loves astronomy, wishing he can see the colors of the things in outer space.The two boys meet, and start experiencing things that they could never experience if their hearts had belonged to other people. Many minor characters will appear throughout the story, as the story is ongoing