Following her husband's affair, Mack, a determined mother of two, finds inspiration to embark on a new entrepreneurial journey - opening her own ethical brothel in small town New Zealand.

With no clients in sight, Mack reaches out to the go-to advertising site Kiwichicks, forcing her to re-evaluate her ethics in a struggle to keep the brothel afloat.

With a farmer convention in town, The Sweethearts are ready for business, but things are complicated when they're faced with two dilemmas: closure by the council & a speaker lodged in a client's bum.

The Sweethearts struggle to keep up with demand so Mack hires Tui's ex-colleagues from the now-closed Shadows, leading to success, chaos and a questioning of loyalty and ethics.

An article in the Northland Times hailing Mackenzie Leigh a "feminist to the rescue" causes chaos for Mack both at the brothel and at home.

While Mack searches for a missing Tui, back at the brothel, the Sweethearts deal with their synchronised menstrual cycles thanks to Deziyah's supposed alpha uterus.

After Mack injures her back, Deziyah steps up as Madam for the day using her ex to bring a stag do to the brothel. Mack and Tui's bond deepens with a therapeutic beach day.

Mack's accidental Valentine's Day date with Lima is going great until it leaves Tui responsible for Toby where things go very wrong.

Following Toby's medical scare, Mack steps back from the brothel, leaving anxious Sweethearts and a worried Jules in Deziyah's not-so-ethical hands.