Audiences enjoyed The Lego Movie enough to warrant a sequel and any spin-off that we could get our hands on, including The Lego Ninjago Movie. But the film was green-lit nearly three years ago, when everyone was still basking in the “Everything Is Awesome” afterglow. So don’t feel bad if you need a little reminding about what this particular movie spun off from a line of toys is about. Besides, Jackie Chan breaks it down real quick: as Sensei Wu, he leads a team of secret Ninjago warriors. His recruits—who are voiced by Abbi Jacobson, Kumail Nanjiani, Michael Peña, and Zack Woods, —show varying degrees of eagerness for the responsibility, though. Maybe it’s because they’re worried about the warlord Koko (Justin Theroux).

Directed by Charlie Bean, The Lego Ninjago Movie is scheduled to hit theaters on September 21. A full trailer is coming soon.