The Family Plan follows Dan Morgan (Wahlberg), who lives a quiet suburban life as a car salesman, loving husband, and proud father of three. Unbeknownst to his family and friends, however, he was once an elite government enforcer entrusted with the mission of eliminating threats worldwide. His past comes back to haunt him in the form of old enemies with present grudges, leading him to take his wife (Monaghan) and kids out of their comfort zone and on a last-minute trip to Las Vegas.