Get ready for the DADDY of all family comedies! When it comes to raising their kids, Dusty (Mark Wahlberg) and Brad (Will Ferrell) finally have this co-parenting thing down. That is, until Dusty's macho dad (Mel Gibson) and Brad's sweet-natured father (John Lithgow) come to town, throwing the whole family into complete chaos. As old rivalries create new problems, Dusty and Brad's partnership is put to the ultimate test in this hilarious and heartwarming comedy that gives new meaning to the term 'blended family'.