 Randir starts a chain letter but Pogo hijacks the scheme for his own profit - except the mathematics of the scam seem too difficult. Claire gives out Biorhythm readings to her classmates of N5. She tries giving the staff readings, but spoilsport Mr. Smart won t give out his date of birth. Stewpot and Pogo spend the maths lesson trying to find the flaw in the chain letter idea. Male teachers are buzzing around Miss Gordon, but the girls are dismayed to see her in Mr. Smart s car...