Moonbyul suffocated her love for Solar during 7 years because she thought it was impossible. Until she got heartbroken and decided to change her life. 11 years later, Solar finally faces her former best friend again and there are many things that had been left unsaid. Both women got married and became mothers but there is still an emptiness in their souls. Does time heal everything, as it is said? Is it possible to mend what was shattered into a million pieces?

The lonely writer Min Yoongi looses everything when his younger sister, his only family left, dies in a horrible accident by the sea. Every year on new year's eve, he visits her grave and lays flowers on it, promising to return next year. One time, after the short visit, he takes a walk by the shore like the past three years and picks up some sea shells because they were his little sister's favorite thing. While he was walking, he saw someone standing not too far with a big conch on th