Behavioural expert Marie Gentles continues her work at Milton Hall Primary School. In this episode, she is helping six-year-old Oscar and nine-year-old Olivia deal with behavioural issues that are reaching a point of crisis. Olivia's anger and subsequent outbursts mean that her relationships with staff have deteriorated, and she is spending more time out of class than in it, losing hours of education. Meanwhile, Marie’s work with Oscar reaches a crucial moment with an outburst in the playground that leads to a breakthrough in school.