What is the plan the nurse brings back from Romeo?

is it this ? The nurse determines to get a ladder, which will allow Romeo to climb into Juliet’s room that night—because they will be married then and will do what married people do.

Yes, you are correct. In William Shakespeare's play "Romeo and Juliet," Act 2, Scene 4, the nurse brings back a plan from Romeo. The nurse tells Romeo that Juliet wants to see him, and they need to find a way for them to spend their wedding night together. The plan involves obtaining a ladder, which will allow Romeo to climb up to Juliet's room that night after their marriage. The nurse informs Romeo about this plan so they can make the necessary arrangements.