7th Heaven - Season 8 Episode 10 The One Thing

Matt and Sarah begin their student rotation in the ER, but get off to a bad start by arriving late and angering Dr. Norton, the attending ER physician. Matt and Sarah's relationship is tested when Matt quickly demonstrates an aptitude for the work, but Sarah accuses him of trying to make himself look better than the other students, especially her. However, Matt ends up looking foolish when he can't figure out how to turn off the ringer on his cell phone and he gets stuck fielding calls from his family. Matt's day ends tragically, leaving him to question his destiny.