Vasuki decides to take care of Sati(Shakti). Vasuki wishes to approach Lord Shiva for Sati's welfare. Vasuki visits Kailash to meet Shiva.
Vasuki informs Lord Shiva about Sati's suffering. He urges Shiva to take care of her. Vasuki pays his gratitude to Shiva for blessing him.
Now on other side all the snakes were already given order by Lord Brahma that snakes and serpents will live only inside earth(underworld), they will not come on land surface. But because Lord Vishnu wanted to arrange meeting of Lord Shiva with Sati(Shakti born to Daksha Prajapati's daughter) , he caused an unbalance to world. Snakes came on the earth surface.
But this was against Lord Brahma's orders, so Lord Vishnu sent his vehicle Garuda, a bird, to kill all the snakes.
There Vasuki tries to stop Garuda from attacking the snakes, but Garuda reminds Vasuki of the curse which Brahma has given to them, and also tells him that snakes have crossed their boundaries and that snakes should stay in Patal-loka. But Vasuki defends the snakes and garuda tells that he would kill Vasuki. And a fight starts between Garuda and Vasuki.
Garuda picks Vasuki and dashes him on the ground. Vasuki calls Shiva and says that you can’t tolerate injustice, then why so delay in coming as Garuda is killing Vasuki.
Shiva comes there to save Vasuki, which leaves Garud shocked.
Shiva decided to stop Garuda, Lord Vishnu appeared to save Garuda.
Lord Vishnu said "Please Lord, you have to win me first to kill garuda".
For the sake of Vasuki and Snakes ,Lord Shiva accepted Lord Vishnu's challenge. Lord Vishnu reveals to Lord Shiva that he had plotted to fight with him for the welfare of the universe. Lord Shiva and Lord Vishnu reconcile with each other. Lord Vishnu succeeds in pacifying Lord Shiva.
Lord Shiva blesses Vasuki and Garud. He takes Vasuki around his neck because Vasuki's role and his sacrifice was too much important. Vasuki was injured by Garuda and he was devotee of Lord Shiva. Vasuki was the King of Serpents, and he lost many snakes because of this incident, many of family members,too.
Lord Shiva takes Vasuki around his neck and blesses him that he will be having more important role while "Samudra manthan" will be happening in near future.