Clark must save his family sans his powers in this interesting second episode of Smallville's fifth season.
For saving his good friend Chloe from freezing to death in the Fortress of Solitude, Clark's biological father Jor-El takes his powers from him. However, once three men have escaped from Belle Reeve Sanitorium, they are after Clark for the things he has previously done to other meteor infected people, most of which have gone to the institution because of him. While the escapees hold Clark's parents and Lana hostage at the Kent household, Clark and Chloe must find the serum at LuthorCorp that will cure them from their infection. Only when he gets creative is Clark able to stop the criminals and save those he loves.
This episode is interesting to see Clark act as a hero without his abilities. An intriguing angle for a story about someone who is used to being nearly invincible, but now just mortal.