Her father was a kind-hearted policeman. He died when she was 3.Ia is his unica hija - his outside daughter, his bunso. After he died, her mother, tita, and yaya abused her. When she told her mother "Mama, binubully ako," her mother did nothing.In Grade 5, she killed her cat to see if anyone would care. No one did.In Grade 6, she became the bully. In Grade 7, she met Althea - the girl who thought she was manipulating Ia. But Ia learned to hide her real face at age 3. She lets Althea think she's winning.In Grade 11, Ia dies in the 2nd cubicle, first floor bathroom. Ma'am Lontoc says it's clogged because of Zakura. No one knows why Ia never showed her real face until the end.10 years later, Luna transfers to the same school. She meets Mika, Jessa, and Sabel. They hear the first floor bathroom is haunted and has 100+ bones under it.Luna finds a diary hidden behind the middle mirror. It's Ia's diary. Inside is a police badge Ia kept since she was 3, and one page that explains everything.This is a WLW mystery about karma, family abuse, and a girl who hid her face to survive. There is only one Ia. There is only one Althea. The rest are just trying to find the secret behind in mystery.