Mama's shady ex-husband, Bill re-enters her life and she's sure he's come around to squeeze some money out of her. Mama's suspicions are right but Raj is on to his father's game and finds his $200 dollars for writing school to be in danger of being snatched.

With Mama planning to work on Christmas, Raj and Dee agree to have Christmas dinner at Bill's apartment. However, Mama is able to get out of working at the last minute and soon discovers that the kids have plans and she finds herself facing a lonesome Christmas.

Raj has become a practical joker and delights in playing tricks on his teacher, Miss Collins. However, when he goes overboard, he finds himself suspended from school and to avoid getting Mama involved in the situation, he turns to his father, who quickly discovers the joys of parenting.

Needing extra money, Mama agrees to take on a boarder who will stay in Dee's room while she reluctantly agrees to share a room with Mama. However, everyone is in for a surprise when Bill asks to take the room and even more surprising, Mama agrees to let him move in.

After a school lecture about hypertension, Raj begins spending more and more time down at the free clinic. This leads Dee to sneak a peek at his diary to see if she can find a clue to ""what's wrong with Raj.""

Bill has become serious with his latest girlfriend and announces that they plan on getting married. Almost everyone is happy for the couple including Mama who even lets them have the ceremony in her house. However, it's Dee who refuses to accept their marriage and refuses to be the flowergirl in the wedding.