Natureza is going to to the polar cap to conduct some studies. She needs someone to build an igloo for her while she sets up scientific instruments. Impervious to cold, Grisù accepts to come along and build the igloo. He quickly runs into comic difficulties: the snow he is to dig out to make bricks gets too hard, he's distracted by a playful sea lion, then he's trapped by falling icicles (and fortunately gets rescued by Natureza)… To top it off, as Grisù is almost done, a snowball thrown by the sea lion smashes on his head. Surprised, the little dragon lets out a flame that melts down the igloo's top. But a firefighter never gives up! Using the icicles as beams, he rebuilds the igloo's top , right in time for Natureza and him to shelter from a coming windstorm. The igloo withstands the storm perfectly and once the wind subsides, the young dragon can come out and play snow baseball with his sea lion buddy.
