Season 18 of The Real Housewives of Orange County will not be sweet and sunny for Shannon Beador.

That's because between her DUI arrest last year and her ex-boyfriend John Janssen moving on with returning costar Alexis Bellino, the 60-year-old is facing a boat load of drama.

In fact, as the Bravo series' newly released trailer teases, Shannon and Alexis have an explosive confrontation over Alexis' new romance with the businessman. 

"I have your ex-boyfriend," Alexis yells at Shannon in the June 6 preview. "There's the door, Shannon Beador!"

The bad blood between the castmembers goes from bad to worse as Alexis seemingly threatens to uncover a secret about Shannon. "We never wanna take someone down like this," Alexis says through tears. "I'm telling you it will ruin her life."

Cut to Shannon, in tears, saying of John, "He's a monster," before Alexis is shown crying and saying, "She's such a piece of s--t!" 

And when Alexis reveals her intentions to eventually marry John, Shannon explodes in a confessional with, "Does she want to be me?!" while also warning of her ex, "You have no idea about John Janssen. You have no idea."

As for what potentially damaging undisclosed info Alexis is hinting at, Shannon is seen calling the supposed rumors "extortion and blackmail."

But her feud with Alexis isn't the only stress Shannon is facing. After she was arrested last September and charged with hit and run while driving under the influence in Newport Beach, costar Tamra Judge is seriously questioning Shannon's life choices.

"Shannon is not taking accountability for what she did," Tamra admits before confronting Shannon and telling her, "You decided to drive your car into a house drunk!"

Alexis even weighs in on the DUI drama by adding, "There's a lot more, and if she wants to go to-to-toe, I'm ready."

Meanwhile, new season 18 Housewife Katie Ginella wastes no time starting beef with Heather Dubrow. 

"You lied," Katie tells Heather, who viciously fires back, "Stop saying the word lie. I didn't lie!"

However, Katie adds in a confessional, "I can see straight through her."

Check out the explosive trailer above for a preview of Shannon and Alexis' feud, the wild cast trip to London and a cameo from a Real Housewives of Beverly Hills star. And keep reading to see the stunning new cast photos and to learn more about season 18.

The Real Housewives of Orange County premieres Thursday, July 11, at 9 p.m. on Bravo.

Following a very difficult year, Shannon Beador is doing her best to move forward as she faces the consequences from her DUI.  With her twins in college, this empty-nester is left trying to mend her fractured friendships. However, she’s continuously in the hot seat as her life choices are questioned. Things get awkward for Shannon when her ex-boyfriend’s new girlfriend, Alexis Bellino, threatens to bring damaging information about her past.

No longer a Tres Amiga, Tamra Judge is putting her energy into developing stronger friendships and helping her daughter Sophia, who recently turned 18, navigate her gap year.  As Tamra and Eddie enjoy a new home in Big Bear, they also decide it might be time to sell their longtime home in OC. Tamra’s damaged friendship with Shannon is hotly contested as she wonders if Shannon is truly remorseful for her accident. Also, her new improved friendship with Jennifer is put to the test when Eddie and Ryan get into a heated debate. 

A longtime friend of Heather and Emily, Alexis Bellino comes in full force ready to make waves. She finds her footing with most of the ladies and starts fresh with Tamra, but she instantly finds herself on shaky ground with Shannon as they face off in a series of high-stakes disputes. 

Emily Simpson has gone through an incredible transformation after losing 40 pounds and finds herself trying to adjust to her new healthy lifestyle. Her obsession with the gym has affected her relationship with food, family and friends. When she’s not helping the wrongly convicted as a part of the California Innocence Project, she’s questioning the ladies on everything from integrity to intentions. Her closeness with Tamra causes those around her to wonder if Emily is taking her opinions too far. 

Jennifer Pedranti is ready for a fresh start with Tamra while also trying to prove that her boyfriend, Ryan, is worthy of redemption. She feels a lot of her life is up in the air as she waits for her divorce to be finalized and figures out her financial future. While some of the ladies in the group wonder if she has truly learned from her past mistakes, Jennifer finds some commonality with new housewife Katie. As she strives to make new changes and keep her head afloat, it all culminates when Ryan’s name is involved in a national bombshell that rocks Orange County.

Gina Kirschenheiter has leveled up as a realtor, but her professional reputation is called into question after one of the ladies puts her in a sticky situation. Her relationship with Travis takes an unconventional turn when deciding she wants to live separately, but stay together. On top of this, as Gina watches bestie Emily get close to Tamra, she wonders if their friendship will remain the same.

Always on the move, Heather Dubrow and husband Terry find themselves routinely commuting between Orange County and their new estate in Beverly Hills. Their Balboa Bay Club penthouse suite serves as home base with Terry’s practice and his mother around the corner. After many years of friendship, Heather and Gina find themselves at odds over loyalty and betrayal. Heather isn’t quick to warm up to new housewife Katie, and their relationship takes a wrong turn when Katie confronts her about an old rumor. 

New to Orange County, Katie Ginella and her husband, professional golf journalist Matt Ginella, recently moved from San Diego. She’s looking to expand her circle of friends while working to launch her own cocktail line. Now ready to learn more about her Korean heritage and connect to her roots, Katie decides to explore her adoption further and meet her birth mother. After meeting the ladies, Katie immediately finds herself smack dab in the middle of the drama and gets a quick lesson in how loyalty works in the OC. 

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