Clark hears the voice of his biological mother, Lara, calling for help from Kara's crystal and decides to release her, despite Jor-El's warnings. Lara and Clark reunite and she gives him Jor-El's ring, which contains blue kryptonite. As Clark puts it on, her realizes Zor-El manipulated the whole thing and that blue kryptonite strips him of his powers, enabling Zor-El to take control of the Fortress of Solitude. Meanwhile, Chloe and Lex each discover Lois and Grant have been seeing each other and warn them to stop. Written by
Did You Know?
In the comics, blue kryptonite simply negated the effects of green kryptonite it didn't have any adverse affect on Superman. See more
This is why I need you to give me a ride. I need to get this ring off my finger and go to the Fortress.
Look, Clark, my Yaris gets awesome mileage, but I seriously doubt it will get us all the way to the North Pole.
References Raging Bull