Sunny is a 17 years-old girl, who just moved to Seoul after her mom died. She has to go to a new school where the only person she knows is her 3 years older brother Joon, in the middle of the semester. Her parents were divorced and by choosing to live with her mother instead of with her father, she got separated from her brother. Her father isn't happy with her presence, not now his new wife is pregnant and Sunny only fights with his wife. Also Sunny changed a lot since the death of her mother. Joon asks several times where the old Sunny is and later in this story he will get the answer. "The aegyo queen died when omma died." Will Joon get the Aegyo Queen back with help of his friends?