This Is Us airs Tuesdays at 9 p.m. ET on NBC

By Natalie Stone
November 29, 2016 03:30 AM

Jack and Rebecca are at odds about what is best for their son, Randall.

In a PEOPLE exclusive This Is Us sneak peek at Tuesday night’s episode, Jack Pearson (Milo Ventimiglia) and his wife Rebecca (Mandy Moore) argue about searching for their adopted son Randall’s (Lonnie Chavis and Sterling K. Brown) biological parents.

Audiences learned earlier in the season that Randall’s father left him on the steps of a fire station when he was born, and the Gleason couple chose to adopt him after losing one of their triplets during birth. But now that Randall is older, the parents don’t see eye-to-eye about what they believe is beneficial to their son’s well-being and identity.

“Jack, we talked about this,” Rebecca says to her husband who suggests the idea of beginning the search for Randall’s birth parents while getting ready for bed.

“I know — hear me out. We hire a guy, okay, he checks hospital records, sees what babies were born that day, talks to the families. Maybe he finds the people that gave him up,” Jack suggests.

But Rebecca is clearly not open to the idea and quickly shows her disinterest in the father of three’s suggestion.

“And then what? And then what are you hoping happens?” Rebecca questions.

“I’m hoping he gets a better understanding of who he is,” Jack explains.

Although Jack has been intentional about having his son meet adult black men that the 9-year-old “can look up to,” he wants to offer more to Randall.

“Well, he is Randall Pearson — that’s who he is,” Rebecca says about her son’s identity.

Jack replies, “Yes, he is our son. He is our all-star, knockout boy who deserves everything that we can possibly give him, even if that means sucking up our own feelings about him having birth parents out there somewhere that might fill this void that he’s feeling.”

“And what if they’re drugs addicts or criminals? We’re going to let them meet our son?” Rebecca fires back.

“Of course not, that’s ridiculous,” Jack says to a silent Rebecca. “Why are you against even trying, huh?”

To watch the story unfold, tune into This Is Us on Tuesdays at 9 p.m. ET on NBC.