Yoo Hye-Jung becomes a successful neurosurgeon, following her rocky beginnings. Plus a look back at how it all started, as she fought against her destiny in high school.

Hye-jeong makes a new friend when she sees a familiar face at school; When an emergency takes place, Hye-jeong learns something about Ji-hong.

Ji-hong decides to leave; Seo-u's jealousy gets out of control; Hye-jong faces even more struggles, even when a friend makes a sacrifice.