With very limited text (strictly dialogue), the story is told mostly through the illustrations, which juxtapose a scowling old man and an eager young boy as they face the prospect of heading out on a rainy day, the old man grumbling all the way, and the young boy playing make-believe in his froggy-themed rain gear.  Both their attitudes seem to be contagious to all they encounter, until they both end up at the “Rain or Shine Cafe.”  The old man growls at the young boy, too, both when he bumps his chair, and even when he offers to share his cookie, but when the grump leaves his hat behind, and the youngster chases him down to return it, they share a moment impersonating each other, and the old guy walks away happy.  It’s fine, but the ending seemed a bit pat, and I kept thinking the boy was a girl because the tassels on his froggy hat looked like pigtails.