When the ghirls arrive at a haunted house, Heidi feels an instant connection with one of the residents but soon discovers something that will complicate her love life considerably.
The police approach Heidi and Angelica about a series of mysterious deaths at a brothel. The ghirls go undercover as “women of the night” to help the police solve the mystery.
A group of kids call the Ghost Ghirls when they think their baseball field is haunted by the notorious ghost, “Bloody Bat” who, rumor has it, decapitates children and drinks their blood. The group comes together to stage a fake game to help him cross over, but Bloody Bat has his own plan.
Heidi and Angelica get a call from Megan who is convinced her ex-boyfriend is haunting her to keep her from moving on with her love life. The ghirls discover that the ghost just wants to finish something he started the night he died: proposing marriage.
Heidi is possessed by a ghost writer who forces her to type his racist and misogynistic manifesto. She becomes an overnight success and basks in the glow of instant fame… until Angelica makes her realize that she’s becoming the most hated woman in America.
A drab accounting office is being haunted by a Studio 54-like 1970‘s club owner, who just wants to party like it’s 1979. The ghirls discover that the building used to be his club and need to find a way to allow the ghost one final night of debauchery before he crosses over.
Heidi has a moment of dyslexia and the ghirls find themselves at the wrong house. While trying to escape, they discover their rival ghost hunting team, The Ghost Bros, and try to scare them out of the house using every trick in the ghost hunters’ book.
A middle schooler hires the ghirls to get rid of a bullying ghost at school. While on their case, the girls regress to their middle school roles of bully and bullied.
Heidi and Angelica get a frantic call from Marian, a resident at a retirement home, who is convinced her husband's deceased best friend is haunting her. The ghirls discover that the ghost is indeed haunting Marian, but not for the reason she believes.
When strange things begin happening during weddings at a resort hotel, Angelica and Heidi are called in to investigate. They quickly discover that the resort is being haunted by the ghost of a drunken bridesmaid with unfinished business.
A recording studio is being haunted by a 1970s Southern country rock band, who couldn’t stop fighting long enough to finish their last song. Meanwhile Heidi and her mother have been asked to shoot the pilot of a reality show that’s suspiciously similar to Ghost Ghirls. While Angelica tries to help the band deal with their issues and cross over, Heidi struggles to live up to her mother’s ridiculous expectations.
While Heidi is having issues with her mom on their reality show, Angelica forces the band to sit down and talk about their problems. During the mediation, Angelica realizes how important her partnership and friendship with Heidi is, and the Ghost Ghirls reunite, helping the band cross over in an epic conclusion to season one.