a weird college senior tells Jessica a story about soulmates.
One stupid theory, but one that seemed true—at least that day she met Donghae.
Since then Jessica knew, just knew, that the guy walking away from her as the
first wind of Spring blows the Earth, was her soulmate.

Years later, back from Japan, she meets him again.  As Jessica gets to know the
man  she strongly thinks is meant for her, she slowly learns some lessons about
love: that  every love story begins with an unrequited attachment, that the heart
cannot be  taught who to love, and that even soulmates does not guarantee a happy
ending.

Together with her friends, Seohyun and Jonghyun, Jessica will try to take the
challenge and make the soul destined to become one, completed before the new
season comes in.