The finale of This Is Us is just around the corner — and just like every other episode of the NBC drama, you better have tissues handy.

After just one season, fans have fallen in love with the Pearson family. From Jack joining a young Randall at karate lessons to older Randall reuniting with his biological father, the show has had its shares of heartwarming moments.

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So what can fans expect from the highly anticipated finale? (Warning: spoilers ahead)!

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According to TV Guide, the season comes to an end with a look at how Jack makes things right with Rebecca, who is in Cleveland for her first big music gig.

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Milo Ventimiglia, who plays Jack, recently shared some behind-the-scenes photo from this flashback — and he no longer has his signature mustache!

"Jack way back when," he captioned a photo of himself in character in a black car, which may be the one he sold when Rebecca, played by Mandy Moore, got pregnant with triplets.

As for the Pearson kids, they are all "making big decisions about their futures." Will Kate finally open up to Toby about her father's death? Will Kevin stay in New York City with Sophie?

Justin Hartley, who plays Kevin on the TV series, hinted fans should prepare themselves for the finale.

"I can tell you hold on tight. It's intense. It's intense, man. It gets heavy. Very heavy," he told E!. "This is a different kind of heavy. It's a different kind of heavy. It's gripping, but it's kind of a dangerous episode. Dangerous is a good word. I don't know if that's a good word now that I think about it. I'm going to use it anyway."

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Director Kevin Olin also hinted about the final episodes of the show on Twitter, writing, "The last 4 episodes of This Is Us will go places we've never been before."

We can't wait to tune in!

The season finale of This Is Us airs Tuesday, March 14 at 9 p.m. on NBC!