Mackenzie Diamond has had five near-death experiences in the last two years and yet she still has no sense to be careful. There seems to be no reason why she's like this. Mack's just one of those odd cases. At least, that's what the Guardian Angel Council believes. They've already assigned her to three different Guardians. Normally, they'd re-assign her as usual, but all of the capable female Guardians have the max amount of assignments already. The only other choice is to assign her to a male, at least until a female is available again. So who other than the Head of the Council's son, who had just graduated from the Academy, would be fit for the job? Logan Chase hastily accepts and sees it as an opportunity to show the council of his worthiness, but never considers how much work Mack will put him through, and never considers the fact that her life is constantly in motion. They face tests of devotion, and soon begin to question the very definition of sanity. As their worlds collide, both are in for a roller coaster of the unexpected.