Jo Eun, a high school student from Busan suffering from amnesia, believes he was an outcast in the past. He transfers to a school in Seoul.
Determined not to be ostracized again, Jo Eun tries to get along with his classmates and gradually adapts to his new school life.
The problem arises when he is paired with Seo Beom! Jo Eun is instantly drawn to her at first sight. However, Seo Bom is the designated outcast chosen by the school's king, Hwang Dae-han.
His classmates warn him that associating with Seo Beom will lead to Jo Eun being ostracized as well. Yet, despite his intentions, Jo Eun's heart keeps gravitating toward Seo Beom.
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