S2·E15 Episode 42

Dündar and the Kayı make a trade deal with Tüccar Melik and Süleyman (Simon and Petrus), Ertuğrul comes in Osman's dream reminding him of his will for his second marriage and Nikola is made the "Tekfur of Tekfurs" while his army from Constantinople, led by Alexander, is destroyed by Osman in a great battle. Alexander survives.