Kara gets a visit from her cousin Clark. They go out just spending some time together. Kara and Clark are enjoying eachothers company. Meanwhile, Lex Luthor is on the verge of developing Red Kryptonite out Green Kryptonite and other chemicals in his lab. When he finishes it, he makes it into a ring. Lex traps Superman and puts the Red Kryptonite ring on his finger. Superman's eyes turn red and he becomes very violent. He goes off on a rampage across the city. Can Kara as Supergirl stop Superman and get him back to normal? Can she beat her him or will Superman kill his own Cousin? Who is stronger? Supergirl or Superman....? [Megan Morse (Ms Martain) and Conner Kent (Superboy) will get together.]
