Following an intial trailer in April, Lucasfilm returned this week with an all-new trailer for Star Wars: The Last Jedi. And, it’s packed with stuff we’ve yet to see.

In fact, writer-director Rian Johnson says it reveals so much that he suggested you “absolutely avoid” it “if you want to come in clean.” The trailer focuses on Rey and Kylo Ren, digging a bit into their past. Oh, and we actually get a first glimpse at the mysterious supreme leader Snoke.

Watch the revealing clip above. Star Wars: The Last Jedi hits theaters December 15.