The scavenger who waited
Rey gets by on Jakku trading parts for food portions with the junk dealer Unkar Plutt. She marks the days she's been waiting for her family on the wall. When she saves BB-8 and crosses paths with Finn, a deserting stormtrooper, the two steal an old ship, which happens to be the Millennium Falcon.
Han Solo and Chewbacca find them and take them to Maz Kanata's castle. There, Rey touches Luke's old saber and has a jumbled vision of past and future. Maz tells her that whoever she's waiting for on Jakku isn't coming back and that the belonging she seeks may be ahead, not behind.
Rey refuses to take the saber and runs into the forest, where she ends up captured by Kylo Ren.