Chocky, the mental extra-terrestrial, returns to help to his friend Matthew.

A year later of his first coming to the planet Earth, Chocky and Matthew return to be together. In this time Chocky decides help Matthew, giving information about advanced technology what benefit to the humanity the and the secret of the cosmic energy, but he will not be alone: Albertine, a mathematical genius girl will help Matthew and Chocky when the pair discover what have got telepathic powers, powers what must use for to escape of the evil forces what close around them.—Chockys