London (CNN) This could be the week that everything comes together on Brexit -- or everything falls apart.

After months of refusing to cede barely any ground on her plans for leaving the European Union, UK Prime Minister Theresa May is likely to find control of Brexit is taken from her hands.

Amid talk of a Cabinet coup against her and hundreds of thousands of people marching to demand a second referendum -- as well as a petition to cancel Brexit altogether reaching five million signatures -- the Prime Minister would be forgiven for wanting to relinquish some control.

Lawmakers will vote Monday night on whether to come up with alternatives to the Prime Minister's Brexit deal, which has twice been defeated in the Commons. If this motion succeeds, they will take part in a series of so-called indicative votes on as many as seven options on Wednesday -- including a second referendum and a hybrid of May's existing deal that would keep the UK in a customs union with the EU.

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Uncertainty reigns

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