On the way to Berkehan, Ertuğrul Bey was trapped by Arıkbuka on his way. Ertuğrul Bey and the Alps, who were prepared against all kinds of games to be established, had managed to escape while Arikbuka and his men had been neutralized and killed now. Umuroglu oba in the ranks of the oba lords who tricked their own Sirma, Flood Bey as the oba bey had chosen and accepted his marriage proposal. Realizing that there was a trick in the election of the Beylik, Ilbilge asked for help from Gündoğdu and disrupted this game and neutralized Taşkın Bey. Ertuğrul Bey went to tell him that one of the closest men to Berke Khan was a spy and that he informed the Mongols about the great color they would launch in Anatolia and deciphered the traitor.

After Ertuğrul Bey killed Albastı, he saved his brother Gündoğdu from the trap of Arıkbuka and returned to obaya. Turgut healed seriously injured in the war, Ertuğrul Bey and Gündoğdu'nun unobtrusive return to obaya had turned obay instead of a holiday. Mr. Ertuğrul Bey talked to İlbilge Hatun, whom he had previously promised to marry, and stated that he wanted to conclude this issue in the near future. Sirma Arikbuka who could not digest the murder of his brother said he wanted to contact and cooperate. Thereupon, Arıkbuka learned where Ertuğrul Bey would meet Berke Han's men and set up a trap for Ertuğrul Bey.

Ertuğrul Bey was captured by Hülya Khan's secret spy Arıkbuka and Albastı, Turgut was seriously wounded, and Mergen and Dumrul Alp were killed. Gündoğdu and Bamsı Ertuğrul set out to save Mr. Bey but could not catch up.
Arıkbuka was not only following Ertuğrul Bey but also Gündoğdu and he had set another trap to catch him. He had put a piece of Ertuğrul Bey's clothes where they wanted to be trapped, and had attracted Gündoğdu and Bamsı towards him. When Bamsı and Gündoğdu fell into the trap of Arıkbuka, Albastı was taking Ertuğrul Bey to a secret cave for questioning. However, Ertuğrul Bey had untied his hands and neutralized Albastı's men. Now Albastı and Ertuğrul Bey were left alone in a tough battle and killed Ertuğrul Albastı.
Ertugrul Bey, who knew Arikbuka's trap, went to the cave to save his brother Gündoğdu and Bamsı and killed Arıkbuka's men and saved his brother and Bamsı. Arikbuka secretly escaped from the war and felt that he would avenge this incident.