Joko Tingkir studied magic from Ki Buyut Banyubiru. He studied the magic because he wanted to redeem forgiveness because he had killed Dadungawuk Sodara from Sultan Demak. Ki Buyut Banyubiru gives his science lessons in Lawu Mountain. One of them is by immersing themselves in a cold river, with the aim of being able to control the passions.
After several months Joko Tingkir studied, Ki Buyut Banyubiru has allowed Joko Tingkir to meet with Sultan Demak to ask for forgiveness over what he has done is to kill Dadungawuk. In his journey to the place of Sultan Demak, Joko Tingkir faces many wild animals that block him, one of which is conquering the crocodile king and his gang.
Arriving at the village of Sultan Demak, incidentally in the village is the occurrence of a ferocious bull that rages and ravaged the village village, at that moment Joko Tingkir met with Sultan Demak to ask for forgiveness with the requirement to be able to fight the wild bull, Sultan Demak agreed. Finally Joko Tingkir managed to fight the savage bull with a blow to the head of the bull, mentally and broke the bull finally fell
The village warrior was fascinated by the action of Joko Tingkir who had confronted the savage bull and defeated him. Sultan Demak forgave the deed of Joko Tingkir the other day and forgive him. Then Joko Tingkir was appointed as the leader of the enlisted army, and eventually became the son-in-law of Sultan Demak.