Hi from Turkiye, plz help?

Hi my friends. I am Turkish. We watch your very nice tv series "Bidaai" on the Turkish tv channel "Kanal7"
I like a song so much but i cannot find its name. Could u help me please?
That song is playing here:
https://www.youtube.com/watch?v=ByNJzktgipE

What is its name and how can i download it? Thank you very much.