Ed Cooper's a senior infant now and that means using the big boys'
toilet. Ed needs "to go" but he just can't. The big white toilet is very
different to the junior infants' loo--with no lock on the door and
goodness knows what hiding "down there!" What can Ed do? He can't hold
on forever. Maybe, just maybe, there's a way out--Gran's potty. Gran's
potty is no ordinary potty but can it help save the day?