It''s a simple idea, really. 1. Wear a uniform; 2. Protect who you love, what you care about; 3. Let nothing get in your way.

Someone mugged Bruce''s mum and he is not having it. The shock is still visible in her trembling fingers, rippling out across the calm waters of their lives. He grabs his hoodie, his uniform, his cape and goes out to find the culprit. Smithy wants everyone to stay inside, Uhuru wants everyone out. Tanya thinks it''s boyish fun and games until, very suddenly, it isn''t.

Inua Ellams''s play questions the boundaries between our right to self-defense and taking the law into our own hands. Told with five roles spanning from young people to adults, it deals with themes that young people face today: the role of boundaries and what happens when someone ''crosses the line''; fear and the use of self-defense; and examining different perspectives on a situation.

Originally commissioned by Synergy Theatre Project Cape premiered at London''s Unicorn Theatre in 2013 and went on to tour schools, prisons and a young offender institution.

This new edition, published within Methuen Drama''s Plays For Young People series features notes for teachers and exercises for students for practical use in the classroom.