In the Book
In the Movie
Though Éponine and the Thénardiers have been living next door to Marius for some time, it is not until shortly before Valjean's kidnapping that they meet formally.
Éponine appears to have been working with the revolutionaries for some time.
Marius visits the Rue Plumet several times before finally speaking with Cosette, and more time passes before Thénardier and Patron-Minette attempt to rob it.
All of this happens in one night.
Thénardier and some members of Patron-Minette are imprisoned in La Force, and have to break out before attempting to rob Valjean's house.
Thénardier is never imprisoned.
Thénardier and Patron-Minette are dissuaded from robbing Valjean's house by Éponine, who threatens to scream and refuses to let them pass, something that Brujon counts as a sign of bad luck which drives them away due to their being extremely superstitious.
Thénardier and Patron Minette don't listen to Éponine, which leads her to scream and attract some policemen, forcing the criminals to flee.
Éponine inspires Marius to go to the barricade as a death-seeker after he believes he has lost Cosette.
Marius goes of his own accord, to fight with the revolutionaries.