The video showcases a cartoon-style animation of a submarine moving through an underwater environment. The submarine is green with a propeller on the back and has a clear dome on top where two characters are visible. The environment is filled with various sea plants and rocks, and there are small fish swimming around. The submarine moves smoothly through the water, and the characters inside appear to be enjoying the ride. The animation is colorful and playful, with bubbles rising to the surface of the water.