Mo attempts to create a father/son bond with Blair. Dawn and Spencer have a lively dinner with Dawn’s parents. Keith finds his secret increasingly difficult to hide.

At Blair and Tiff’s engagement party, Mo’s feelings for Dawn begin to cloud his judgment. Wayne and Yassir get into serious trouble, while Keith takes a big step.

Michael says goodbye to the family business and starts his own. And the life of the family is turned upside down when their mail man Pete dies.

Lindsay tries to reclaim her sense of self while traveling and getting back to her political activist roots.