The white-picket-fence world of the Hart family collapses when Texas soccer mom Reba discovers that her dentist husband Brock is leaving her for his impossibly perky and unfortunately pregnant dental hygienist Barbra Jean. As if that bombshell isn't enough, Reba also learns that her 17-year-old daughter Cheyenne is pregnant by her boyfriend Van. Concerned with the effect all this chaos will have on 12-year-old Kyra, and 9-year-old Jake, and determined that her family will muddle through this domestic mess together, Reba summons her courage and plans a shotgun wedding while trying to keep the husband-stealing future stepmother of her children at arm's length