Pluto is considered "the dark planet" -- not only is it the farthest planet from the Sun, but it reveals your darkest inner workings and your need for fundamental change. But that doesn’t mean it’s a scary or threatening planet (even if Pluto is the lord of the underworld). Pluto also represents your ability to transform within. This is where your most unconscious personality traits come to light.
Pluto gives way to obsession and compulsive behavior. It highlights the areas of life where you make and want to make your most significant changes, which may ultimately lead you down a brighter path.
In Astrology, the planets move through the zodiac at their own pace and interact with each sign -- and each other -- to set the mood here on Earth.