The Long Grey Line

Most of the faculty decide to strike, leaving Joe scrambling for substitutes when he refuses to shut the school down, while Sara's and Harry's relationship is put to the test when they wind up on opposite sides of the picket line. Meanwhile, Harry and Jack face additional stress when Harry's ex-wife, Chris, sues him for custody of Max and Nicole, and Jack has a fender bender with Mary Caitlin, who doesn't have insurance.