Star Wars: The Last Jedi - Predicting The Plot In 10 Steps
4. The Resistance Regroups, Rey Sneaks Off
Now they have the location of The First Order's central trio and have a better idea of their strength, the Resistance formulates a fully-fledged plan of attack.
Rey is haunted by the conversation she just had with Kylo Ren; the dark side is calling to her. Eventually, she can't ignore it anymore, and sneaks off in the Millennium Falcon, heading back to Kylo and Snoke.
Snoke knew she would return. She asks them if they can train her. She is beginning to resent Luke for his unwillingness to help, something she perceives as cowardice. She just wants to learn - she believes she is meant for something more than the dull life she lead at the start of The Force Awakens.
Kylo and Snoke agree to teach her the ways of the Force. They offer to provide their help, but on one condition. The scene cuts before we find out what that condition is, but it will be revealed further down the line.