Wigan finished second to League Leaders Shield winners Leeds in the regular season.
The defending champions were Bradford Bulls Women,[1] but they failed to make the play-offs in 2018.
[2] At the end of the regular season, the top four teams met in the play-off semi-finals.
The winners met in the Grand Final at the Manchester Regional Arena on 13 October.
Leeds struck back with a Caitlin Beevers solo effort, covering 80 metres from a 20-metre restart, Courtney Hill added the extra two points.