What starts as a diversion to stave off boredom during the Easter holidays soon becomes much more for the seven young members of the Blue Door Theatre Company. The four girls- Lyn, Sandra,Vicky and Maddy- and three boys- Bulldog, Niegel and Jeremy- play every part in the theatre, not only on stage but off it too, producing everything from the scripts and sets to the music and costumes. They also learn that the show must go on, even in the face of their arch-enemy, Mrs Potter-Smith, local critic and leader of the Ladies´ Institute.