In the near future, aliens have invaded Earth and declared a galactic war resulting in thousands of human casualties. To save Earth, a team of four teenage astronauts brave the alien wilderness of a distant planet to stop an assassin from changing the course of history forever.弄出来的铜(tóng )，不(✨)够制作一个青铜剑，还(📏)(hái )需要更(gèng )多的铜矿，更多的锡矿。