This is a claymation adaptation of Plato's famous allegory of the cave. The story is told in a compelling, interesting, and highly memorable way.
Source: YouTube, http://platosallegory.com/Default.aspx
From the Encyclopedia Channel, this video clip offers a detailed, highly informative biography and introduction to the philosophy of Plato. Due to the far-reaching nature and huge historical impact of Plato's life and philosophies, the clip provides a basic introduction in just over 6 minutes.
Source: YouTube
To truly understand in-depth the impact of Plato's life and philosophy, visit http://en.wikipedia.org/wiki/Plato. A comprehensive understading of Plato's philosophies and full life story is the work of years of study, due to the amazing output of ideas he brought forth during his lifetime.
For a more detailed look at Plato's "Allegory of the Cave," please visit http://en.wikipedia.org/wiki/Allegory_of_the_Cave.
Both of these sites will refer you to even more resources for the study of Plato's life and work.
Source: Wikipedia.org, Rebecca Oberg