Brewster and Maggie help Hamish with his wagon. It is very hot and Hamish wonders 'How does the sun make it warm?' Up in space the three friends meet Sunny Sun who clarifies that sometimes he's closer to the earth and that makes it hot. Discover answers to questions only young children ask! Through creative thinking, Brewster and Maggie take young viewers on a journey of discovery in a way that will not only entertain, but will get their creative thinking caps on!    Based on the book series `Brewster the Rooster' by Clifford Parrott.