“Kingsman: The Golden Circle,” the sequel to 2015's “Kingsman: The Secret Service,” is something to watch out for, according to actor Taron Egerton.

Speaking with Entertainment Weekly, the actor shared a few details about the upcoming film. Egerton said director Matthew Vaughn did a great job with the film. He also said that there are lots of “challenging” stunts but the movie has an “incredible” team which saw to it that everything goes right.

Egerton also gushed about the actors he has been working with for the film and assured viewers that the project will be “incredible.”

One of the reasons why the upcoming film will be one to watch is the return of Colin Firth, whose character Harry Hart, died in the original movie. Firth has recently confirmed his involvement in the project, although he did not say how his character will be re-introduced and if it will be as big as it was in the first film.

Speaking with Collider, the actor teased: “A lot of people have speculated and a lot of people have come to the wrong conclusions about it. I want to keep the surprise alive, a little longer. I think they're going to be surprised again.”

The upcoming movie will see the return of not only Firth and Egerton but also Mark Strong, who played Merlin. The movie will also feature newcomers Jeff Bridges, Julianne Moore, Halle Berry, Channing Tatum and Sir Elton John.

The first film introduced Eggsy (Egerton), whose late father worked with Hart as a spy. Eggsy was later recruited to train for the agency and became one of its agents, but not after he was able to stop Richmond Valentine's (Samuel L. Jackson) plan to save the rich and let ordinary people kill each other as a way to solve climate change.

“Kingsman: The Gold Circle” is slated for a June 16, 2017 theatrical release.