It's really a rip off of Cloudy with a Chance of Meatballs and was quite disappointing. Walter is essentially like if Flint and Sam had a baby but more obnoxious with his can't-shut-his-mouth, self-righteous attitude. There's even some elements in the story taken from cloudy like the whole invention goes wrong thing. I was expecting it to at least be average because characters barring Walter didn't seem bad but it turned out worse than I thought. The characters are two dimensional with predictable arcs and Walter had no flaws so no character development besides a predictable bonding with Lance. Even the pigeons are one-dimensional. It's one of the top 10 or 15 worst animated films of the decade even if it came out at the tail end. Avoid it, it's so overrated.