What if you see your parents being shot dead in front of your eyes by a stranger? You see these tragic events but can do nothing to help them. You seem to be in a nightmare. But it's too real to be a nightmare. Gemanantha Azriel, a man with hazelnut brown eyes and brown curly hair, must experience this tragic incident. He witnessed it when he was seven years old. Gema continues to hone his skills and talents. Until the age of twenty-one, Gema completed his doctoral studies and a bachelor's degree in Education. He has two professions that he works simultaneously: a doctor at a hospital owned by his adoptive parents and a Biology teacher at a high school. However, Gema's current focus is more on being a teacher and teaching his students at school. Who would have thought, right? A young man who is handsome and looks so perfect in the eyes of others turns out to have a very dark past. Gema's life is colored again when he meets Agatha Pricilla, a tomboyish girl who becomes his student. Will Gema be able to avenge the tragic death of his parents? Or will he back off and try to let go of the grudge when he knows a fact in the middle of his journey? Who killed Gema's biological parents? And what causes it? Then how does Gema feel about the tomboyish girl who is his student? Is it possible that teacher and student can be together? Who knows? Let the flow run itself.