(NBC) "This Is Us" returns tonight, as the lives of the Pearson family enter into a third season.

Newlyweds Kate and Toby face challenges in starting their own family, the adoption storyline for Randall and Beth with Deja continues, and the love story that set "This Is Us" in motion will flash back to its beginnings.

The season premiere airs tonight at 9:00 EST, followed by the series debut of "New Amsterdam."