MPs have forced Theresa May to request a Brexit delay - by just one vote.
And she's not just given up the driving seat to Parliament.
Jeremy Corbyn also looks more powerful than ever, as his and May's teams hold fresh meetings today to thrash out a softer Brexit plan.
Privately both sides are sceptical about whether they can reach a deal - especially with the clock ticking.
But Attorney General Geoffrey Cox rolled the pitch for a big government climbdown last night, denying a customs union - Labour's softer Brexit - would be a "sell-out".
The loss of control has prompted a Tory meltdown, with Brexit-backing MP Mark Francois quoting Jesus Christ.
Here are 5 facts to explain what's happening this morning as the country stumbles on towards chaos.
1. MPs have forced a Brexit delay - by ONE vote
MPs voted last night to FORCE Theresa May to seek a delay to Brexit - Brexit: MPs vote to force Theresa May to seek Article 50 extension by ONE vote
A Bill by Labour MP Yvette Cooper, which blocks No Deal from happening next Friday, passed 313-312 after clearing all its Commons stages in an afternoon and a night.
The Bill will force Theresa May to table a motion in the Commons next week asking the EU to delay Brexit beyond the current April 12 date.
The Prime Minister will say how long she wants the delay to be - but MPs can amend it.
It doesn't rule out No Deal Brexit permanently, but does mean it's off the table next Friday.
The Bill will now go to the House of Lords today where Brexit-backing peers could try and filibuster it.
Brexit: MPs vote to force Theresa May to seek Article 50 extension by ONE vote
The result after 11pm was the end of a dramatic day which also saw Brexit vote TIED in House of Commons for first time in 26 years
In a result the finest satire couldn't make up, MPs could not decide whether to... make a decision about Brexit.
Yes really. They voted 310-310 on a plan for a third round of "indicative votes" for the future of Brexit on Monday.
The plan was blocked after House of Commons Speaker John Bercow followed precedent, and used his "casting vote" to avoid a major decision being taken without a majority.
Brexit vote TIED in House of Commons for first time in 26 years
2. May's talks with Corbyn continue today - but there's a lot we don't know
Theresa May and Jeremy Corbyn met for almost two hours yesterday to thrash out a joint plan for a softer Brexit.
Today their teams - though not the leaders themselves - are expected to meet again as they work against the clock.
The Prime Minister has to present the EU with a new direction for Brexit this weekend, in time for an emergency summit of 27 leaders next Wednesday.
There the leaders will decide whether Brexit should be delayed, and for how long.
But there are still splits and a lack of clarity.
Jeremy Corbyn said the talks went "very well", and the Attorney General opened the door to a climbdown by saying a customs union, Labour's demand, was not a "sellout".
Yet it's still not clear how far Theresa May will compromise. Not only on a customs union but crucially on the length of delay.
She wants to delay Brexit only until May 22, the date EU elections start. Others including many EU leaders want the delay to be much longer.
And the Tory Cabinet is split, with Chancellor Philip Hammond admitting there are "different views within the Cabinet" about the length of an extension.
Which takes us to the next problem...
Time for Jeremy Corbyn to step up as stakes are high in Brexit blame game
3. The Tory party is in utter meltdown
The Tory party is in utter meltdown over the prospect of a customs union - a plan only 36 Conservative MPs voted for - and a long delay to Brexit.
Hardline Brexiteer James Duddridge last night Brexit: Tory hardliners declare 'open season' with fresh bid to oust Theresa May
He demanded MPs hold an "indicative" vote of no confidence in Theresa May, since they can't actually oust her until 12 months since their last attempt.
And after MPs passed a Bill to delay Brexit, furious Leaver Mark Francois Brexit: Tory Mark Francois quotes Jesus in epic midnight Biblical meltdown
Quoting Christ praying to God for the souls of those about to crucify him, he exclaimed: "Forgive them Father, for they know not what they do”.
Brexit: Tory Mark Francois quotes Jesus in epic midnight Biblical meltdown
It came after a bruising day for Theresa May when Tory MPs lined up again and again to claim her talks with Jeremy Corbyn would usher in an "anti-Semite led government".
Meanwhile Nick Boles, who quit as a Tory after failing to enact a softer Brexit, turned on the PM's top aide, a former senior editor at the BBC.
The MP tweeted: "The PM’s head of communications Robbie Gibb is a hard Brexiter who wants to destroy the PM’s new search for a cross party compromise."
Remain-backing former Chancellor Ken Clarke today said he had "never seen a bigger shambles" as he called for a longer extension to Brexit.
Mr Clarke told Today: "I think the EU would give us an extension - they would be very angry with us - but I think the EU too would suffer if they just patched something together in the next eight days because it got fed up with our inability to make a clear consensus policy."
Brexit: Tory hardliners declare 'open season' with fresh bid to oust Theresa May
4. Labour faces a bitter split over a second referendum
Labour faces a split at the highest levels over whether to demand a second referendum on the Brexit deal.
The Shadow Cabinet clashed last night over whether Jeremy Corbyn should make a "confirmatory" public vote on any deal a red line in his talks with Theresa May.
Backers of a referendum fear he won't make the demand, which the Prime Minister is very hostile tol.
Emily Thornberry, the Shadow Foreign Secretary, Brexit: Emily Thornberry says Corbyn's deal with Theresa May must include referendum warning any deal without a public vote would "breach" a pledge by Labour's conference.
Deputy leader Tom Watson told ITV's Peston: "I don't think our party would forgive us if we were to sign off on a Tory Brexit without that kind of concession."
But Labour chair Ian Lavery warned last night's Cabinet meeting Labour could be "finished" by a People's Vote.
Backbench MP Jess Phillips today said: "Of course we are split. It would be a lie to say otherwise.
"But I actually think that what we're suggesting in putting Theresa May's vote to the people will unite the Labour Party for the first time in a very long time."
Saying 80% of Labour members back a People's Vote, she added: "This is a bottom line for the party."
Brexit: Emily Thornberry says Corbyn's deal with Theresa May must include referendum
5. And actually, so do the Tories
Just months ago a second referendum wouldn't even be dignified with a response by the Cabinet.
But last night Chancellor Philip Hammond sent shockwaves through Westminster by lending some support to the idea.
The minister - who reportedly argued for a second referendum in Cabinet - said the idea is "perfectly credible" and "deserves to be tested in Parliament".
He told ITV's Peston: "I’ve said it’s a perfectly credible proposition.
"Some ideas have been put forward which are not deliverable, they are not negotiable but the confirmatory referendum idea, many people will disagree with it, I’m not sure there is a majority in Parliament for it but it’s a perfectly credible proposition and it deserves to be tested in Parliament."
Health Secretary Matt Hancock hit back at his Cabinet colleague today saying a second referendum "would be divisive, it wouldn’t be decisive".
Mr Hancock told Sky News: "A second referendum isn’t about delivering Brexit, it’s about having another go."
