Stuart Beattie has signed on to write and direct the second and third installments of Tomorrow, When the War Began, the Australian action movie that has made a box office splash down under since it opened Sept. 3.

According to The Hollywood Reporter, the sequels will also reunite the original cast and producers.

The two sequels will be shot back-to-back, but have not been officially greenlit, although that is expected to change in the coming weeks.

Tomorrow, When the War Began is based on a popular Australian YA book series by John Marsden and tells the story of a group of high school students who return from a camping trip to find their hometown invaded by a foreign army. In Red Dawn fashion, they begin to wage a guerrilla war on the invaders.

Tomorrow, When the War Began had the third-largest opening for an Australian movie behind Happy Feet and Australia and was the largest for a film not financed by a U.S. studio. It passed the $5 million mark in its first week.

Back in its home country, the film is making stars out of its young leads, particularly Caitlin Stasey, a TV actress making her feature debut.