Abbey Grove is plunged into financial ruin when headmaster Mr Fraser gives the "Nigerian Minister of Finance" all their money with the promise of huge returns on the investment. With Professor Green executing an austerity drive which sees the school pillaged of resources, Rosie thinks it's time to move on and applies for a job for a school in Soweto. Will Alfie come up with a plan to save the school and stop Rosie from leaving? And how will he react to the big announcement Professor Green is hiding from him about his father?