In celebration of the Big Three’s birthday on Saturday (August 31), NBC released the trailer for This Is Us‘s upcoming fourth season!

On September 24, Dan Fogelman’s tearjerker of a drama series will return for an 18-episode fourth season. This Is Us was renewed in May for three additional seasons — of which this is the first — which will see the show through it’s sixth, and likely final outing. The premiere episode of season 4, as revealed in the trailer, will be an extended episode.

“If you think you know what’s coming next. You don’t know us,” the trailer proclaims, as it flashes through several scenes teasing the upcoming stories that will feature in season 4.

Series regulars Milo Ventimiglia, Mandy Moore, Sterling K. Brown, Chrissy Metz, and Justin Hartley have all been confirmed to return to the series, but they will also be joined by several new faces. Among those new faces are Asante Blackk, Marsha Stephanie Blake, Omar Epps, Bahara Golestani, Jennifer Morrison, Timothy Omundson, M. Night Shyamalan, Julian Silva, Auden Thornton, and Nick Wechsler.

So, mark your calendars. We have no doubt that Fogelman and co. will continue to tug at our heartstrings when This Is Us returns to our screens. Make sure you’re all stocked up on tissues before then!