The Irn-Bru advertisement script shows a student looking despondent after receiving a failing grade. Another student then brags about their high A+ grade. The failing student finds an Irn-Bru drink, takes a sip, and suddenly feels confident enough to leave with their failed grade. The advertisement suggests that drinking Irn-Bru can magically give students confidence and courage, even if they failed a class, with the slogan "If you can't do it, Irn-Brue it!".