The Itsy Bitsy Spider - Nursery Rhymes

Inspector Itsy helps Simon and Pete find the missing letter I (for Itsy) In this nursery rhyme, will the Itsy Bitsy Spider ever make it all the way up the waterspout? Why does that pesky raincloud keep trying to wash him out? Can the sun come to the rescue? And what will the Itsy Bitsy Spider do after that?