Forced, annoying rhymes and not much of a story.
It's a book about a rainstorm. Lot of onomatopoeia. Two kids are the main characters and it follows them around as they run away from the rain and they go in the subway. The illustrations are interesting. They seem to be very high realism, possibly photographs, blended with childlike drawings.
It talks about how when everybody is gathering in the subway they get more friendly, and how everybody helps each other out in the rain.
The rhymes are somewhat low quality, “We race upstairs./Shake drops off hair/'Look up!' we cry./Surprise in sky.” That's a very awkward, silly way to describe a rainbow.
Perhaps the diction is intentionally childlike? But no, then they wouldn't have used the word “congregate.”