A phenomenon known as the Merge has caused many legendary realms to suddenly combine into one, but their union is unstable. A Spinjitzu Ninja Master must train a new generation of heroes to help find Elemental Dragons who can save the planet before the forces of evil use the same dragon energy to destroy this new world.

Lovable pug Chip starts kindergarten, makes new friends and tries new things -- with a little help from Potato, her secret mouse pal.