Chitose has been released from the orphanage, and intends to finish school while living in the house he once shared with his parents. But he keeps getting into trouble, his grades are awful, and he is bitter and apathetic. His teachers know what the boy needs: a mother! Five of his teachers volunteer for the position at once, and vy with each other to be the best. Chitose soon has his hands full trying to manage his weird new family, while trying to keep his new living arrangement a dark, dark secret.