My name is Tachibana Yuuji, a regular student with no particular plans for the future - until my parents left for Hawaii on a business trip last fall, leaving me in the care of my uncle in the wintry countryside of Hokkaido. Small-town life on Japan's northern island didn't have time to get dull, as from the moment I got there I was reunited with my cousin and childhood friend Saki. She's pretty demanding, but when I'm hanging out with her and her school friends I don't mind; as I get close to them I feel like I'm finding meaning in life that I didn't know I was looking for. Legend says there is a flower that blooms here in the depth of winter... as the twilight deepens and a snowflake melts in the palm of my hand, I stand with a beautiful girl by my side. Will we be able to uncover its mystery in this fleeting moment?