Ep 7. The Empty Planet Part 1

The Sarah Jane Adventures season 4 episode 7, The Empty Planet Part 1, begins with Sarah Jane investigating a strange phenomenon - the entire world's population has disappeared overnight, leaving only her and a handful of other people left on Earth. As they explore the empty city, strange things begin to happen, with objects moving on their own and strange noises echoing through the deserted streets.

Sarah Jane and her small group of survivors soon discover that they are not alone, as they encounter a group of aliens known as the Veil who are responsible for the disappearance of humanity. The Veil are conducting a survey of Earth and plan to destroy it once their data collection is complete.

Sarah Jane and her team of companions, including Clyde, Rani, and Luke, must work together to find a way to stop the alien invasion and bring humanity back from the brink of extinction. Along the way, they encounter a mysterious man named Peter Dalton who seems to know more than he's letting on about the Veil's plans.

As Sarah Jane and her companions investigate further, they uncover a sinister plot involving the Veil and other alien races who are seeking to destroy Earth. With time running out, Sarah Jane and her team must find a way to defeat the aliens and save the planet before it's too late.

The Empty Planet Part 1 is a thrilling and suspenseful episode that builds tension and excitement as the mystery unfolds. With strong performances from the cast and impressive special effects, this episode is a must-see for fans of The Sarah Jane Adventures and lovers of science fiction in general.