Colin the Crab, a hardworking handyman, lives by a beautiful river. He often fixes Ms. Catfish's old villa, which would fall apart without his repairs.

Norma the Newt and Sally the Starfish constantly need Colin's help too. On top of that, a hungry fish family hopes the crab will share his delicious soup with them.

After a busy week, a happy group of friends gets together at Colin's blue garden pavilion.