He starts destroying Christmas gifts, and he also plays many pranks on citizens of Whoville.
So now to find the missing blueprints, the Grinch goes through the Whoforest, Whoville, Wholake and Whoville Municipal Dump. Unfortunately, the Grinch falls down from the large boxes and the blueprints for his gadgets fly away from the wind blowing and they fly far into different areas of the Wholand. But first he needs to prepare the gadgets and for that he has some blueprints.
So basically what happens is that the Grinch looks through a telescope at Whoville and plans to use his imaginative amazing gadgets to steal the Christmas presents.
