After living in a orphanage, Woo Seul-gi transfers to a top-ranking school hoping to find her father - and soon catch...

Facing a heartbreaking discovery, Seul-gi struggles to adjust to her demanding schoolwork, while her background makes...

Yu Je-i continues to show kindness towards Seul-gi and invites her to her private study space, drawing the two girls ...

A furious Choi Gyung becomes suspicious when Je-i nominates Seul-gi as class monitor. Ju Ye-ri overhears a conversati...

While Seul-gi finds details of her family history on Je-i's phone, Choi Gyung looks into the connection between the t...

Students take drastic measures to beat the stress of midterms. Choi Gyung shares a discovery with Seul-gi, causing th...

Ye-ri makes a deal with Je-i's father, Yu Tae-jun, by using his secret against him. Seul-gi worries about a healt che...

Ye-ri steals Seul-gi's father's phone. As she tries to unlock it, the rest of the students head to the school festival.

An attack at the festival causes panic at the school. Je-i comes to face with a figure from her past as they fight ov...

As the police investigate the school's drug problem, Seul-gi comes under suspicion. Je-i makes a deal while seeking t...

Struggling to find Yu Je-na, Je-i decides to frame her for dealing, hoping the police will be able to locate her befo...

A traumatic discovery leaves Je-i in a vulnerable state. Feeling uncertain over the situation, a suspicious Seul-gi l...

While attending a funeral, Seul-gi suspects foul play. Her search foe evidence leads to a grim connection between her...

With the help of Seul-gi, Je-i uses hidden cameras to spy on her parents, hoping to find a witness who can assist wit...

Je-i and Seul-gi take drastic steps when their ranks slide after a big test. Byeong-jin pressures Choi Gyung into tak...

Leading up to the exam, Je-i and Seul-gi craft a final, defiant plan - but there are high risks for everyone involved.