Ted starts to feel pressure and insecurity as plans for the Arcadian get underway and Barney and Robin are fearful that this will drive him to get back together with Zoey. When Ted is nowhere to be found, Barney and Robin follow a trail of clues to Brooklyn so they can stop him from making a big mistake and are able to catch him in the nick of time. Meanwhile Lily gets horrible food poisoning from a grungy deli she and Marshall like and Marshall, who ate the same thing a few hours later, becomes concerned that the same fate is upon him. Things get worse when Marshall gets a call to come in that day for his dream job interview at an environmental law firm and must figure out how to make it through the interview without getting sick.
