Serena was captured by some Rulons and brought back to their base, and brought to Lord Krulos. They successfully captured one of the Valorians. Krulos ordered his troops to bring her to the lab for brain boxing.

After Serena is brain-boxed, she is brought to Lord Krulos, and he is very intrigued to see her being his slave and likes what he's seeing as he looks up and down at her body.

Krulos: At Last! With my Brain Box in place, I will destroy all the dino-riders and rule the world.

Serena then walked up to him and sat on his lap.

Krulos: You know, Serena, you're quite lovely," he murmured, his gaze roaming over her body. "It's a shame you had to choose the wrong side in this war. But I have big plans for you.