walk into
US /wɔːk ˈɪntuː/
UK /wɔːk ˈɪntuː/

1.
to enter a place by walking, often unexpectedly or accidentally
:
•
I didn't see the glass door and almost walked into it.
•
She walked into the room and everyone stopped talking.
2.
to encounter or experience something unexpectedly, often something negative
:
•
He walked into a trap set by his enemies.
•
You might walk into some trouble if you're not careful.