Harry, the little white dog with black spots, is trying to stay cool on a scorching hot day at the beach. The sand is burning his paws, and the sun is beating down, so he carefully steps into the cool, refreshing water to find some relief. But suddenly, a massive wave crashes over him, leaving him completely tangled up in thick, green seaweed. When Harry climbs out of the water to find his family, nobody recognizes him. Instead of a friendly pet, the people on the beach think a terrifying sea monster has just washed ashore. The lifeguards are panicking, the crowds are running, and poor Harry just wants to find his family's striped umbrella. Join Harry on a hilarious seaside mix-up as he tries to prove he is just a dog in need of a good brushing.