MARTIN MOONE IS APPROACHING A MOMENTOUS MILESTONE . . .
. . . the end of primary school – and he’s determined to get his face up on the Winners Wall before he leaves. Entering the invention convention with his motley crew of substandard scientists might be his only hope.
But coming up with amazing inventions is harder than Martin thought – so when his imaginary friend, Sean, suggests they get their hands on some Notion Potion, a mythical brain-boosting beverage, Martin leaps at the chance. But first he has to find his dream team of inventors . . .