Daddy's Home (2015)

Comedy starring Mark Wahlberg, Will Ferrell and Linda Cardellini and directed by Sean Anders. Brad, who is unable to have children of his own, is nonetheless a very enthusiastic and caring stepfather to his wife Sara's kids, Megan and Dylan. But his budding relationship with his stepchildren is threatened when their biological father Dusty swaggers into their lives. Muscular motorbiker Dusty's plan is to reignite his relationship with his family and force slightly nerdy radio producer Brad out. And it's soon clear he'll stop at nothing to do this, playing up Brad's flaws, impressing the kids and using Brad's apparent infertility as leverage between him and Sara. So the contest is on for Brad to more than match macho man Dusty's campaign to win over the children and Sara. Brad is on the back foot to begin with, but will he remain there for good?