Actress Amber Heard is slated to climb into the witness box this week in Johnny Depp’s explosive $50 million defamation trial to offer her side of their doomed marriage – just days after she fired her PR firm.

Depp, 58, is suing her over a 2018 op-ed she wrote alleging she was a victim of domestic violence, claiming the abuse allegations were an elaborate "hoax" to promote her film "Aquaman" and punish him for leaving her.

JOHNNY DEPP V. AMBER HEARD DEFAMATION TRIAL: LIVE UPDATES

She countersued the "Pirates of the Caribbean" star for $100 million, accusing him and his former lawyer of conspiring to destroy her reputation in a series of smear campaigns.

Johnny Depp and Amber Heard appear in the courtroom during the $50 million Depp vs Heard deformation trail at the Fairfax County Circuit Court April 12, 2022, in Fairfax, Virginia.

Johnny Depp and Amber Heard appear in the courtroom during the $50 million defamation trial at the Fairfax County Circuit Court, April 12, 2022, in Virginia.  (Brendan Smialowski / various sources / AFP)

It will finally be Heard’s turn to respond as the first witness in the defense’s case – just days after she abruptly axed Precision Strategies Thursday over a slew of negative headlines, according to the New York Post.

Heard was reportedly upset about the trial coverage and hired Shane Communications, which has gone head-to-head with Depp before. CEO David Shane worked for The Management Group after Depp sued the business firm for negligence, fraud and breach of duty. 

The "London Fields" actress, 36, has remained largely stoic, aside from the occasional eye roll or smirk, as Johnny Depp and a parade of witnesses mercilessly picked apart her character during the trial that opened April 11 in the Fairfax County Circuit Courthouse in Virginia. 

Amber Heard at "Aquaman" premiere

Amber Heard arrives for the world premiere of "Aquaman" at the TCL Chinese theatre in Hollywood on Dec. 12, 2018. (Mark Ralston/AFP via Getty Images)

Her legal team offered a roadmap of her testimony in opening statements, describing Depp as a "monster" who physically, emotionally and sexually abused her during drug-fueled rages.

BROKEN VODKA BOTTLE FIGHT

On a trip to Australia in March 2015, Depp allegedly spiraled out of control after scarfing down at least eight ecstasy tablets, Heard’s lawyer Elaine Bredehoft told jurors in opening statements.

Bredehoft described the couple’s knock-down-drag-out fight that began over a postnuptial agreement as a "three-day hostage situation" that left Depp missing a piece of his finger.

Johnny Depp and Amber Heard

Johnny Depp and Amber Heard at his defamation trial against her. (Evelyn Hockstein/Pool via AP)

"He rips off her nightgown, he has her jammed up against a bar, he has hurled bottles and bottles at her," the attorney said.  "He has dragged her across the floor on the broken bottles and the liquor. He has punched her, he has kicked her, he tells her he’s going to f---king kill her." 

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Heard is expected to tell jurors that her ex-husband raped her with a liquor bottle – recounting publicly for the first time the alleged sexual assault.

The "Black Mass" actor has accused Heard of throwing a vodka bottle at him that shattered on his hand, severing the top digit of his middle right finger. Heard has denied it. 

YEARS OF ABUSE

The Texas native, whose father was a construction worker, is expected to tell jurors she fell deeply in love with Depp after the two met on the set of "The Rum Diary" and began dating in 2011.

But that he turned into a "monster" when he used drugs and, after years of abuse and fruitless efforts to help him get sober, she finally had enough.

Amber Heard, the former wife of Johnny Depp

Amber Heard attends the screening of "Pain And Glory" during the 72nd annual Cannes Film Festival on May 17, 2019. (Stephane Cardinale - Corbis/Corbis via Getty Images)

Heard has said that she thought he was going to kill her on numerous occasions, and her lawyers have said she has the photos and text messages to prove it. He allegedly beat her, gave her black eyes and yanked out chunks of hair.

The screen siren's testimony will likely mirror the claims she made in 2020 on the witness stand during Depp’s libel trial against The Sun newspaper in the U.K. for calling him a "wife-beater." 

Heard described 14 incidents of alleged domestic violence over a three-year period. The judge ruled that Depp had repeatedly assaulted Heard, leaving her in fear for her life.

THE FINAL STRAW

Heard says the final straw in their marriage came May 21, 2016, with their last blow-up that led to Los Angeles police showing up at their penthouse.

It was the day after Depp’s mother died and one month after the infamous defecation incident when the housekeeper found what appeared to be human feces in their marital bed April 22. Depp had blamed Heard and her friends for the sick prank. Heard denied it, fingering her teacup Yorkies.

Depp had stopped by the penthouse to pick up clothes and the two began arguing about the incident.

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"He has it in his head that Amber has conspired with her friends to defecate on the bed," Bredehoft said. Heard called her friend to try to set the record straight and the pair started laughing, allegedly triggering a fresh rampage.

"He started hitting Amber, grabbed her cell phone from her, wound it up and bashed it into her face," the lawyer told jurors.

Actress Amber Heard leaves the Superior Court of Los Angeles in Los Angeles, California, U.S. May 27, 2016, with what appears to be a bruise on her right cheek after obtaining a restraining order against husband Johnny Depp in this still image from video. REUTERS/Rollo Ross TPX IMAGES OF THE DAY - S1BETGNKADAA

Amber Heard appeared with bruises on her face at a Los Angeles courthouse May 27, 2016, to obtain a restraining order against ex-husband Johnny Depp. (Reuters)

Her friend, who was still on the line, called 911, but Heard refused to cooperate when cops showed up. 

Three days later, Heard filed for divorce. Six days later she strode into a Los Angeles courthouse to obtain a restraining order against Depp, sporting prominent bruises on her face, as a gaggle of photographers snapped her picture.

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Depp has claimed that when he told Heard he wanted a divorce, she made up the allegations and battered her own face to punish him.

NOT A 'GOLD DIGGER' 

The pair finalized their divorce in 2017 with Heard getting a whopping $7 million payout for their 15-month union – a payout that she promised to donate in full to two charities. 

Johnny Depp Amber Heard

Johnny Depp and Amber Heard at "The Danish Girl" premiere at the 72nd Venice Film Festival Sept. 5, 2015. ( Kurt Krieger/Corbis via Getty Images)

Depp’s team has branded her a "gold digger" looking for an exorbitant payday.  

Heard, who famously dated Tesla titan Elon Musk after the split, may tell jurors the settlement was actually less than she was entitled to. The only reason she hasn’t donated the sum as promised is that Depp keeps embroiling her in expensive lawsuits, according to Bredehoft.

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Heard's legal team says Depp will stop at nothing to destroy her and the negative publicity from their toxic marriage has crippled her career.