A cute kitten peeking out of a box and looking at a fish tank.

The ad opens with a kitten peeking out of a cardboard box, looking at a fish tank. It then transitions to a close-up of a Whiskas Junior cat food pouch. A woman is shown crouching down, offering food from the pouch to the kitten, which then eats from a bowl. The kitten is then shown sleeping in the woman's arms. The scene shifts to a fantastical underwater world with a cardboard submarine shaped like a cat's face, with the kitten inside, surrounded by animated fish. The ad ends with a close-up of the kitten in the submarine.