When young Leo mixes all his paints together, he creates a dull, muddy mess—and hurts the colors’ feelings. By morning, Red, Blue, and Yellow have vanished, leaving the world gray and lifeless.

Determined to bring color back, Leo sets out to find the missing primary colors and understand why each one matters. Along the way, he learns that beauty comes from appreciating differences, working together with care, and respecting every color’s special place in the world.