When Emma gives Brent flak over his coffee drinking, he vows to quit cold turkey if she quits knitting. As Brent struggles in a caffeine-free world, Emma takes up a new pastime with Oscar to counter her knitting-needle withdrawal, but the cure may be worse than the addiction. Meanwhile, Davis and Karen start a ride-along program that becomes a little too popular; and Hank is at the mercy of his new electronic organizer.