Here to offer a little guidance are the stars ofThis Is Usand creator Dan Fogelman.

Youll see more of the old Rebecca and Miguel.

Still reeling fromthat Rebecca-winds-up-with-Miguel revelation?

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Credit: Ron Batzdorff/NBC

Youre picking them up right inside the doorway in that scene and seeing the exchange, Fogelman tells EW.

Turns out that Miguel may not be the worlds biggestHamiltonfan,digging an even deeper hole for himself.

Youll see young William for the first time.

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Its a loaded secret that will carry us through the first season a little bit.

Which may explain his hasty retreat to his bedroom when Rebecca arrived at Randalls house.

Coming [this] week were going to learn that its a little more than that.

Randall is trying to get William some help at doctors.

So Beth [Susan Kelechi Watson] and Randall are constantly trying to negotiate, What are you doing?

Are you going to connect?

If given the opportunity, he might do it, time after time.

(Was that a Cyndi Lauper reference?

Perhaps youre starting to see his true colors.)

Its such a kind, kind gesture, but very scary at the same time.

Kate is breaking up… with Kevin?

The episode doesnt end with a heartstring-yanking cliffhanger, but you might be reaching for a Kleenex before then.

Episode 3 is the most emotional thing Ive ever worked on, declares Fogelman.

its really, really powerful origin story stuff for all the characters.

To watch a preview of episode 3,click here.

But wait, theres more: See the cast ofThis Is Usat EW PopFest;more information here.