Spring, Summer, Autumn, Winter.

Four Seasons. Four different stories of love.

Spring

Hyukjae has everything a man would ever want but he was never happy. He's always alone, with no one to call a friend. Enter Lee Donghae, the milk delivery boy that apparently will change not only Hyukjae's boring life but also his perception about everything, basically giving him the reason to live.

Summer

Donghae is a human, successful in his life yet still feels his life plain and empty. Escaping everything in the city, he went to the most popular beach in South Korea straight to his dream house there, hoping for some fun wherein he'll meet a mysterious guy named Hyukjae.

Hyukjae, a mischievous angel that does nothing but play and worry the heck out of his older brothers. He's always curious about the humans' obsession with the four-letter word. How about fate will play a game on him, making him experience love first-hand?

Autumn

Donghae is a delinquent, very opposite to the goody shoes flower boy Hyukjae. They never mind each other's business until their paths crossed. After a few band-aids and antiseptics, love soon followed turning their worlds upside-down.

Winter

Donghae, the crown prince of South Korea, cold and unfriendly. He loves to be alone and never once opened up his heart to anyone except Leeteuk. Then along came Hyukjae, a complete nobody and a favorite target of the bullies. Upon their unexpected meeting, a close friendship started that soon bloomed into love. But, given their current situations, things will never gonna be that easy for them.