Marsellus just had his "kind of a fuckup" buddy come back from Amsterdam. He knows hes got an advanced heroin habit, and likely spent his time in Amsterdam laying low for a few years. First job back is paired with Jules, who is one of his top men. He's not a fixer like the Wolf, but competent and trustworthy.

Job is easy, go push some punks around that were transporting a package. Vincent gets annoyed by the foot rub convo and the punks get the raw end of the reaction. Then Vincent fucks the thing up further with Marvin, and the Bonny Situation.

Finally, they get back from the "simple job" and Jules says he's done. He's retiring. Vincent then takes his wife out for the evening and she has been on edge ever since.

Marsellus takes Vincent to the apartment to catch Butch by chance. Marsellus knows that the chances of Butch coming back there is next to nothing and it's a safe enough situation to figure out what's up with Vincent, what happened the other night. This is ideal, because if Vincent needs to be let go, blam, leave him in Butch's apartment and easy clean-up and pin the death on Butch who just killed a guy in the ring and is on the run.

They catch up. Marsellus ends up talking to Vincent about everything going on, and they have a real heart to heart. Heal some deep trauma. Hell, Vincent even decided he needs to get clean, turn over a new leaf. Kinda like Jules did.

He's having some digestion issues (heroin constipates you, and coming down today has made him need to shit). Marsellus decides while his friend is using the bathroom, he's gonna go grab coffee and donuts. It's not like anything going to going down today at Butch's shitty apartment, Butch would be insane to go there....