A group of prisoners breaks out of prison using an underground tunnel that leads them into a school. When they discover where they are, they decide to remain in the school until further notice, but Ms. Tam Tam pushes back against them.
The film revolves around a music teacher working in a private school called Tam Tam, who is known for her weak personality in front of her students, and her reluctance to make decisions, which gets her into trouble with her students, their parents, the school administration and teachers.