Cosmo is studying to become a wizard and today is the day of his three final tests. In Ms Fizz’s cave, he completes the first two without a hitch but Cosmo forgets the magic word in the third one! When the smoke clears, Cosmo isn’t looking at a mouse but a little green monster who begins to cause ha...

Cosmo is studying to become a wizard and today is the day of his three final tests. In Ms Fizz’s cave, he completes the first two without a hitch but Cosmo forgets the magic word in the third one! When the smoke clears, Cosmo isn’t looking at a mouse but a little green monster who begins to cause havoc!