Luke Skywalker's Jedi

A new generation of Jedi were trained by Jedi Master Luke Skywalker, around three decades after the Battle of Yavin. These students included Ben, Luke's nephew. At some point, Ren was turned to the dark side by Snoke, a powerful Dark side user. The two then formed the Knights of Ren, who hunted down and killed all the new Jedi. This left Luke to go in search of the first Jedi Temple, where he went into hiding to avoid being found by Snoke.