Ben Cooper, an old farmer, falls in love with the young blond hitchhiker Mari Lou. She falls in love with Ben Coopers money. But, will he have enough to make her happy?

In 1960, four American scientists travel to a planet that has just entered Earth's solar system to see if it's able to support an Earth colony. They find an oxygen atmosphere, a lush earth-like forest, and earth-like animals living around a potable fresh-water lake.