Ep 4. The Power of Three

The Doctor has been traveling across time and space for centuries, saving planets, fighting off alien invasions, and righting wrongs wherever he goes. In the seventh season of the hit series, the Doctor is joined by his companions from the previous season, Amy and Rory Williams, as they continue their adventures together.

In the fourth episode of the season, "The Power of Three", the Doctor finds himself at the center of a mysterious phenomenon that has suddenly begun happening all over the world. Small black cubes have appeared seemingly out of nowhere, and they are doing nothing but simply sitting there, without any apparent purpose or function.

As the cubes continue to appear, the Doctor realizes that something must be driving them - something more sinister than anyone could have suspected. With the help of his companions, the Doctor sets out to discover the truth behind the cubes and to stop whatever is behind them before it's too late.

The episode is a thrilling exploration of the Doctor's world, as he races across the globe and throughout history to finally discover the truth behind the mysterious cubes. Filled with action, humor, and heart, "The Power of Three" is an exciting addition to the long-running Doctor Who series.