Spencer's worlds come together to celebrate his birthday in Beverly Hills. But mixing the dysfunctional families – with the dash of an unexpected guest – ends in disaster. Olivia and Jordan , on a mission to uncover a family secret, discover a missing link to their father's past. Meanwhile, Coop and Patience struggle to define their blossoming romance.

At an explosive homecoming dance, friendships in both Crenshaw and Beverly will be put to the test when decisions made by Spencer trigger an avalanche that drastically changes the course of several lives. Meanwhile, Billy finds himself forced to spend some quality time with Grace and defend his decision to marry outside of the culture. Meanwhile, Coop realizes that getting Shawn out of gang life may come at a steep price for her.