Estimated Ship Date: June 9, 2026

It’s Greg Heffley’s birthday, and you’re invited. But you’ll never guess the shocking surprise his family has in store for him this year.

When Greg’s epic party plans start to unravel, he holds out hope for his one birthday wish—a rare trading card that’s worth a fortune.

Will Greg’s birthday dreams come true? Or will he learn that you have to be careful what you wish for?

This special deluxe collector’s edition of Partypooper is the ultimate gift for fans of all ages. Featuring eye‑catching confetti‑flecked edges and a full‑color, limited‑edition MicroCreatures Three‑Eyed Theeble trading card, it’s a party in book form.

Don’t just take our word for it—start unwrapping and start reading!