Schoolboy detective, Fletcher 'Half' Moon, is keen to crack his first case, and an unlikely new detective duo is born.
Hungry for their first proper detecting case, Fletcher Moon and Red are on the trail of a mobile phone thief at St Jerome's who seems determined to drive the school to complete anarchy.
A swimming trial is sabotaged, a betting ring busted, and pint-sized private eye, Fletcher Moon is forced to conquer his fear of water.
A smudge on a prefect badge leads Moon and his detecting sidekick to expose criminal activity in an unlikely quarter.