Doug and Lexy Monroe are a newly married couple that lost their lives in an airplane crash. Immediately after they arrive on the 13th floor of a hotel (a ghost floor, because the hotels only have 12), where Mr. Shepherd explains that on account of an accidental jurisdiction crossing between Heaven's supervisors, they must return to Earth to help people until Mr. Shepherd's bosses decide whether they go to Heaven. Meanwhile, their souls will live this test of time, both will live on the 13th floor like a temporal house in the waiting for the final resolution. Acting as personal supervisor, Mr. Shepherd will give control to Doug and Lexy on their different missions, hoping that they make a good job for them both go to Heaven someday.