A mysterious force has propelled the Moon out of its orbit and is hurtling toward Earth. The impact will take place in a few weeks, involving the annihilation of all life on our planet. Jo Fowler, a former astronaut who works for NASA, is convinced that she has the solution to save us all, but only two people believe her: an astronaut she once knew, Brian Harper, and a conspiracy theorist, K.C. Houseman. These three unlikely heroes will attempt an impossible mission into space… and discover that our Moon is not what we think it is.