Bilbo could use some magic if he's going to get the annual Christmas event at Goldmine Books to run as planned. Instead he has Bofur, Ori and a serious case of building panic. Then the Durins arrive.
Plan B: an alternative strategy; a contingency plan, devised for an outcome other than the expected plan.
Or, sending an unqualified temp to act as Thorin Oakenshield's PA because no one qualified can put up with him.
(He'd say they can't meet his standards. Of course he would.)
Meet Bilbo Baggins. He just became Plan B.