When her young son Minato starts to behave strangely, his mother feels that there is something wrong. Discovering that a teacher is responsible, she storms into the school demanding to know what’s going on. But as the story unfolds through the eyes of mother, teacher, and child, the truth gradually emerges.
Monster had its world premiere at the 76th Cannes Film Festival, where it competed for the Palme d'Or and was honored with the Queer Palm as well as the Best Screenplay award.