Amber Heardwas spotted on the set of her new movie, In The Fire, for the first time, and she’s arguing with a priest on day one of filming. It looks like her role as a psychiatrist in the supernatural thriller is prepping her for her day in court against ex-husband Johnny Depp. The exes are gearing up to face off over the $50 defamation lawsuit the actor filed against Heard. The trial is set to begin on April 11 in Virginia. Heard looked unbothered by the legal woes and ready to work in the first photos showing her in costume on set. The 35-year-old actress donned olden day attire, wearing a v…