Wiktionary
go in with
vb. (context transitive idiomatic English) To commit to something with; to partner with.
Usage examples of "go in with".
Then I'll go in with a satchel of grenades, and toss them against the door.
They saw him go in with his key, and then they took up a position opposite and watched the house.
In fact, I'm not going to be able to go in with you the way we'd planned.
Get one of the pinnaces over and use its tractors and belly fans to clear the first ten or fifteen meters for them, then they can go in with the hand tractors and shovels.
And when the door was opened, she'd go in with her hands lifted—.
Finally I got it out: 'You mean when you go in with the white folks the people think you're white.