In the episode "Oh Brother," Mel's childhood friend, Austin, moves back to Toledo, and he and Mel quickly take their old friendship to a new level. But Joe starts to think that Mel and Austin may in fact be related, and schemes to break them up. Meanwhile, enterprising Lennox sells ads on her blog to earn extra money, but is horrified to discover her first sponsor may participate in unfair labor practices.

Mel is taken aback when she finds out that Austin may not share her vision of their future and is resolute in his belief he never wants children. Trying to convince Mel not to give up on her dream of a family, Joe introduces her to the neighbor's baby (Melissa Joan Hart's real life son Tucker). Meanwhile, Joe's new girlfriend is only interested in a physical connection, which leaves him confused and wanting more in the relationship. And, Lennox can't motivate herself to write her college entrance paper, so she hires Ryder to be her full time babysitter until she does.