天国阶梯The series is based on Antonia Murphy’s unpublished memoir about an American woman who opened an ethical escort agency in New Zealand after the country decriminalized sex work. Murphy’s company aimed to protect women’s rights, well-being and financial independence.　　Griffiths stars as McKenzie ‘Mack’ Leigh, who sets up an ethical brothel in New Zealand after her philandering husband and mountain of debt leave her struggling to provide for her family.