Sasha Banks went through Hell and beyond to reclaim the Raw Women’s Championship from Charlotte Flair. Now, she’ll have to survive one of WWE’s most storied stipulations to keep it.

The Boss will defend her hard-won championship against the self-styled Queen of the Women’s division in a WWE Iron Man Match at Roadblock: End of the Line. The marathon stipulation — the two Superstars will compete uninterrupted for 30 minutes and whoever has scored the most victories at the end wins — isn’t just the logical end point for a rivalry that has seen the Raw Women’s Title change hands between the two five times in four months. It’s also the first time female Superstars will battle under WWE Iron Man regulations on a Raw-branded pay-per-view (Banks famously competed in the first-ever Women’s WWE Iron Man Match in 2015 against Bayley while in NXT). Plus, it was revealed on the final Raw before Roadblock: End of the Line that there will be no rematch clause for this match.

Will Banks cement her place in history and stop Charlotte’s own record-obliterating streak of singles pay-per-view victories, or will Charlotte spell the “End of the Line” for The Boss’ hard-won status as Raw Women’s Champion? Find out when WWE Roadblock: End of the Line airs Sunday, Dec. 18, at 8 ET/5 PT on WWE Network.