The action thriller 'John Wick' was definitely the unexpected hit of 2014, featuring Keanu Reeves getting his groove back as a certified action star. The film was such an impressive hit that Lionsgate decided that the movie would be expanded into a franchise featuring more of the grieving assassin.

Keanu Reeves recently spoke to Collider to share some details about 'John Wick 2,' explaining how the sequel will explore more on the life of the hit man.

"I think we have a really good premise, and it's an organic premise," Reeves said. "It's basically - to me there's John Wick and then there's John. You know, John is the married guy whose wife just died, and that five years of his life. Then there's John Wick, who's the mythical assassin. In this, John Wick's past comes and infiltrates John's life and John Wick, in a way, has to fight for John."

But don't expect another puppy to get murdered again in 'John Wick 2.' Keanu Reeves explained that there is more to John Wick than just an angry assassin trying to avenge his dead pet.

"'Why tell the story? Why do we need to do this again? How do we do that without doing another dog?' So we speak about John Wick, the next chapter, and what is that emotional hook? What is that? So I think we have a good idea of that," he said.

Keanu Reeves also revealed that director Chad Stahelski already knows what he is planning to do with the sequel.

"Chad and the writer, Derek Kolstad, they've really listened to what people have enjoyed about the work and how they speak about it," he said. "So there's definitely that influence of the other world, the Continental world, the look, the feel, what it is about the movie, what made people like it; is definitely being paid attention to and the world opens up in this chapter."

'John Wick 2' will start filming by the end of October.