The sweet life might just turn sour. After the events in the Bahamas, Paige's engagement to designer Dylan Marceau is about to fall apart-and so is Paige.

Erin's state of mind isn't much better: In addition to keeping Paige in check, Erin is dealing with on-again, off-again boyfriend Bryce's new TV career, as well as having to care for their director, Fran, during her chemo. A trip to Milan might be the break both girls need, but things only seem to get more complicated once they land in Italy.

Dylan is also in town, and Paige's rekindled romance, combined with a new director for On the Runway, leaves Erin with more work on the show. Just when Erin can't take any more, she discovers a secret that could crush Paige. Clinging to God for direction, Erin must find the power to make a difficult choice, one that could not only hurt her sister but throw the show into turmoil.