Grab the tissues!

On tonight's episode of the hit NBC reality competition The Biggest Loser, contestant Scott Mitchell reunites with his family for the first time since the show began 15 weeks ago — and debuts his amazing 126-pound weight loss.

In an exclusive sneak peek video obtained by 'Us Weekly,' the former NFL star, 46, joins his wife, Wendy, and two of his five children in an emotional meeting to reveal his new slimmed-down look.

"Do you even recognize me?" Scott asks them while holding back tears. "You know how much I love all of you. And this is my gift to you."

'the biggest loser'
NBC

"I miss him so much," his son Zach told the cameras. "I'm just so proud of him and what he's accomplished so far."

Scott — who played 12 seasons in the NFL for the Detroit Lions and Baltimore Ravens, among other teams — joined 'The Biggest Loser' weighing-in at 366 pounds. The Mapleton, Utah native said his father's recent death from obesity-related causes ultimately motivated him to join the show.

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"Without a doubt, 'The Biggest Loser' saved his life," Wendy said in the clip via 'Us Weekly.'

Watch the touching video of Scott with his family below and check out the entire episode tonight, Jan. 8, at 8 p.m. ET on NBC: