They really kinda just made Luke 2 with another alien child saved by Sarah Jane that was accelerated to a later age and is figuring out aspects of life for the first time, didn't they.

It’s bittersweet seeing the show reset itself so definitively ahead of its unplanned and all too early end. The public had so much love for Elisabeth Sladen, enough to guarantee 5 series and what would have been more to follow, but alas.

It’s interesting that they opted to put a child in the main cast. Oddly, Rani and Clyde look ancient compared to Sky. Plot wise it borrows as much as possible from the show's pilot and Luke’s origins, however it’s the lack of a strong villain that means this story doesn’t sing quite as well as the original.