This is an obligatory SPOILER ALERT as this write up will focus on the transition from Star Wars: The Force Awakens Episode VII to Episode VIII.
So, if you've seen the end of the Star Wars: The First Awakens VII movie then you would have seen Rey, played by Daisy Ridley, run off in the Millenium Falcon with a map to Luke Skywalker's whereabouts. Luke Skywalker has been in hiding as he has been ridden with guilt after training Kylo Ren with the Force, only to be turned to the dark side.
Rey follows the MacGuffin Map, the map the First Order has been trying to retrieve during the whole movie. The Falcon, driven by the map's coordinates, took her to an island surrounded in ocean. At the top of the mountain, she meets a robed figure who shows himself as Luke Skywalker - the ORIGINAL. Rey held out her hand with the Luke's original light saber, waiting to be taken from her by the Jedi.
That's where Episode VIII starts. Rey will be trained by Luke Skywalker. Fortunately for her, she already got along pretty well on her own in Episode VII with the mind control and using the Force on her opponents. It's the same start-up as Luke, only he met Yoda and was trained efficiently to do air stunts and one on one combat. Luke will most likely do the same with Rey.
In Episode VII, we will see Rey finish her training and become an official Jedi and finish the business with the First Order. She will need to come back to her friend, Finn who will eventually awaken and join the Resistance beside Poe, the greatest pilot ever.
There is also a possibility that Luke and Leia will meet. That would be the most awkward sibling meet-up ever especially since they had a kissing history.
The last question, will Luke tell Rey that she's his daughter? Think about it. When Kylo Ren breached her mind, she had memories of ocean and islands. This could be a possibility, as online sources has indicated.
