Even though the ladies of Bravo’s The Real Housewives of Atlanta have more than enough drama with their families and each other to keep this season interesting, one of the biggest story lines might be Cynthia Bailey’s attack against Porsha Williams. We now have a look at their big showdown.

 WATCH: Cynthia Bailey Makes Peter Thomas Cry, Kim Fields Is Unimpressed With Kenya Moore

The network dropped a sneak peek for the episode that is slated to air Sunday, and it’s safe to say that it could be the most explosive episode for the season thus far.

Interestingly enough, the battle starts with Kenya Moore and newcomer Shamea Morton. All of the ladies are enjoying a ride on a boat when Moore calls out Morton for throwing shade at a recent party she hosted.

WATCH: Kenya Moore Disses Her ‘RHOA’ Co-Stars, But Was She Caught Lying About Ratings?

They throw digs at one another when Moore goes as far as trying to get Morton “escorted off” the boat.

Bailey goes to check on Moore and the ladies start taunting her for being Moore’s “best friend” in the group. That’s when Bailey is clearly irritated, saying, “Well there are a lot of best friends in the group.”

Williams makes it clear, “Well we’re not her best friend.”

Bailey fires back, “There are a lot of other best friends who are questionable in the group.”

When Williams asks who as she calls Bailey a “b****,” Bailey turns around and warns Williams, “Don’t do it.”

Williams is definitely surprised at Bailey’s aggression, asking her, “What are you doing?” as Bailey gets in her face.

See the clip below and tune in to the full episode Sunday at 8/7c on Bravo.

Tags: The Real Housewives of Atlanta Reality TV Bravo