On the series premiere of So Cosmo, the talented and ambitious Cosmopolitan staff learn there is no environment more competitive than the magazine industry in NYC - especially after a big announcement sends the office into a tailspin. As the team prepares for a high profile cover shoot with Ruby Rose, Junior member, Diandra Barnwell, runs into romantic complications when trying to hire a new fitness contributor.

After Editor-in-Chief Joanna Coles announces shocking news, the Cosmopolitan staff fear for their future. Executive Beauty Director, Leah, questions her place at the magazine. Meanwhile, Senior Fashion Editor, Tiffany, clashes with her coworkers during a dramatic New York Fashion Week.

When Joanna Coles finally hands over control of the magazine to new Editor-in-Chief, Michele Promaulayko, the fate of Joanna's core staff is in jeopardy. Meanwhile, an epic clash over a guest list for an exclusive party causes a divide in the Cosmo office, and Diandra distracts herself from Evan by flirting with another man.

At a star-studded Milan Fashion Week, Tiffany comes face to face with an international controversy. Back in New York, Diandra struggles to pull off Cosmopolitan's biggest live event of the year while James and Steven escape the city for a secluded getaway that turns romantic.

The Cosmo staff get an offer they can't refuse when the new Editor in Chief, Michele Promaulayko, gives them a lavish house in the Hamptons for a weekend getaway. As the coworkers get to know each other more intimately, Tiffany's budding relationship with Evan attracts attention, forcing Diandra to admit her true feelings and confront the situation head on.

As the Cosmo staff plans an expensive and time-consuming location shoot in the Bahamas, a category 5 hurricane puts everyone on edge. Diandra and Evan find themselves stranded and alone in Miami with nothing to do but enjoy each other. After returning to New York, Diandra's rivalry with Steven reignites when they are forced to work together.