The Parrs' baby Jack-Jack is thought to be normal, not having any super-powers like his parents or siblings. But when an outsider is hired to watch him, Jack-Jack shows his true potential.

A young boy comes of age in the most peculiar of circumstances. Tonight is the very first time his Papa and Grandpa are taking him to work. In an old wooden boat they row far out to sea, and with no land in sight, they stop and wait. A big surprise awaits the boy as he discovers his family's most unusual line of work. Should he follow the example of his Papa, or his Grandpa? Will he be able to find his own way in the midst of their conflicting opinions and timeworn traditions?

When Day, a sunny fellow, encounters Night, a stranger of distinctly darker moods, sparks fly! Day and Night are frightened and suspicious of each other at first, and quickly get off on the wrong foot. But as they discover each other's unique qualities--and come to realize that each of them offers a different window onto the same world-the friendship helps both to gain a new perspective.