Vathapi forces beseiged Kanchi fort for nearly eight months.This is a historic event in the Indian history.Even a single Chalukya soldier could not step into Kanchi fort.They first tried to swim across the channel built around the fort. In this they failed because of the crocodiles and due to the attack from the Pallava soldiers hiding inside the fort. This made the water unsuitable for drinking (bloody).Then they tried to break the doors using elephants.They succeeded.

But after that their elephants had to face another problem, that is, they were supposed to break another door built with sharp egded weapons embedded on it. This wounded their heads. So, the angry elephants went back to Chalukya soldiers and stabbed many. It was a great loss for Pulakesin. Even these doors were broken using huge tree's trunks. Again they could not enter into the fort. They were stopped by a huge and strong wall. Like this he tried for nearly a month. Then he planned to defeat the Pallavas by making them starve. He waited nearly for six months.

Unfortunately, what he planned to them happened to his force.No food. It was a huge army consisting of thousands of elephants, lakhs of soldiers, bulls etc. Pallava force which retrieved from the north had already wiped out everything. Surrounding villages have already been evacuvated. Chalukya's could not even get good drinking water.

Pulakesin then met Pandya King. Since Maamalla rejected to marry his sister, Pandya was very angry over Pallavas.Therefore, they became friends immediately. Pandya agreed to supply food for the Chalukyas. They had an agreement that after winning Pallavas, area north of Kanchi would be merged with Chalukya kingdom and south of Kanchi for Pandya. Pandya wanted to rule whole of south India and Pulakesin wanted the whole fame of defeating Pallavas (that's why he did not ask for the force).

Pulakesin received a message from Vaengi. Vaengi was ruled by Pulakesin's younger brother Vishnuvardhan. He was very uncapable. He wrote that Harshavardhan may attack Vathapi now and he felt uneasy to rule Vaengi due to riots and his subjects were not happy with him.This letter made Pulakesin very angry.

At that time a man was brought to him. (a spy from Kanchi) . It was Gundodharan. The letter stolen from him had been to Pandya asking him not to help Pulakesin. When Pulakesin was about to punish severely Gundodharan made a signal (swastik). It was the secret code of Naganandi.So, Pulakesin started believing Gundodharan. Gundodharan introduced himself as a disciple of Naganandi working as a spy under Pallavas. He said that Naganandi had asked Pulakesin not to trust Pandya, Dhurvineedhanan and also not to destroy any of the artistic works.Because Harsha was interested in arts. This may help the Pallava to develop friendship with Harsha. He also said Naganandi would be killed soon.

Then Pulakesin decided to sign a peace treaty with Mahendra Varma. At the same time Pallavas expected shortage of food. So, Pallavas agreed to that. Mahendra Pallava wanted to invite Pulakesin inside the fort. This was objected by many. Paritculary by Narsimha and Bhuvanamaha devi. But Mahendra Pallava gave him a grand welcome.

At the same time he sent Narsimha and Paranjyothi with a small capable force to fight with Pandya for supporting Pulakesin. (Narsimha did not want to welcome Pulakesin). Paranjyothi was asked by Mahendra Pallava to save Narsimha in the battlefield as well as from Sivagami. He was also asked to go to his native village to meet his mother,uncle (a doctor). (Paranjyothi wished to marry his uncle's daughter). These things made Paranjyothi to have a great regard for Mahendra Pallava.Kannan was reminded to take Narsimha to Sivagami by Kamali on their journey.

Pulakesin asked for Narsimha as soon as he entered the fort and disappointed by not meeting him. Poets sang in praise of both the emperors. Pulakesin was showed the beauty of Kanchi. But Mahendra Pallava did not reveal Naganandi's presence.

He was also given a dance performance by Sivagami. In that she sang a song which was written expressing a girl's love for Lord Kartikeya. Mahendra Pallava understood the meaning that she expresses her love for his son in the court.She tried to impress Mahendra Pallava using her talent like this and she also felt that it is a very important day in her life dancing before two emperors. So, he asked her to sing a song written by Thirunavukarsu. She sang a song which was written against Mahendra Pallava saying that only God is supreme. No one liked it. Pulakesin was surprised to the respect given the artists. He said that in Vathapi dancers were asked to dance by beating in a whip. Therefore, when Mahendra Pallava asked Sivagami whether she wished to go to Vathapi,for Pulakesin she rejected it immediately. This made Pulakesin feel insulted. She also found the similarity between the Naganadi and Pulakesin.

When Pulakesin was about to leave Kanchi, Mahendra Pallava revealed that he changed the letter of Naganandi which was carried by Paranjyothi and came there in person as Vajrabahoo. Pulakesin felt cheated. He could not tolerate this.