Kalvakra is a mighty asura and is regarded as a living devil. He has a powerful army of millions and is invincible in battle due to a boon he enjoys. When his Army carry away Udho, his friends Krishna and Balram, along with Radha, undertake the journey by sea to Kalvakra's island kingdom, upset Kalvakra's plans to capture them, mange to free Udho and get him safely back to Vrindavan.

"The Dark Enemy"