Depending of your flavor of how the rapture is supposed to work, there is supposed to be a 7 year period of tribulations between the rapture (when X population get pulled up to heaven), and the actual second coming of Jesus. That 7 year period is generally expected to be very challenging to Christians.
Within the Left Behind book series... by the end of the first book (of like 10+), they've already revealed who the Anti-Christ is going to be, and foreshadowed the broad outline of his plans (use the UN and the forces of neoliberalism to do his bidding), and he has already basically mind controlled all the world leaders in attendance, and by the end of the second book, the Anti-Christ has managed to trigger WW3.
Within the Left Behind book series... by the end of the first book (of like 10+), they've already revealed who the Anti-Christ is going to be, and foreshadowed the broad outline of his plans (use the UN and the forces of neoliberalism to do his bidding), and he has already basically mind controlled all the world leaders in attendance, and by the end of the second book, the Anti-Christ has managed to trigger WW3.