Jon Snow

Jon was raised by Ned and Catelyn Stark. He was always told he was a bastard, born in the south and brought home by Ned after Robert's rebellion, and he was raised with the rest of the Stark children. He was close to Robb and Theon, a ward of Ned's, growing up. As well, he always had a soft spot in his heart for Arya, helping and encouraging her in her picking up and training with weapons despite Catelyn's disapproval. Sansa always saw him as Catelyn did, a bastard and a Snow, not a Stark.

As Sansa heads south with Ned to King's Landing, Jon headed North to the Wall with his Direwolf Ghost, to take the Black and defend the realm from the night. Something that was far more true than most people thought. The Dead walked, the Wildlings joined Jon's cause against them, and the Black turned against him and killed him. Melisandre showed up at the Wall and using magic and the Lord of Fire revived him from death, because he has a far more important role to play in the coming war.

After being revived, Jon is reunited with Sansa at the Wall. And after some discussion agrees to head South to reclaim his home from the Boltons. When argued that he's sworn to the Black, he puts his foot down - His oath lasted until death, and he did died. For him, his oath is over.

After taking his home back, the Northerns name him the King in the North and he and Sansa rule over the North until the dragon queen comes to Dragonstone. Sam learns that dragonglass, something that will kill the dead, can be mined in Dragonstone so he heads South to convince Daenerys to let him mine it for weapons but also tries to get her to join his cause against the dead. Something that took time and he eventually succeeded in doing.

Together, he and Daenerys defeated the Night King and the dead, though it was Arya that made that final blow that ended it all. After the defeat, he rode with Daenerys' men South to help her finish the war over the Iron Throne.

Note: Mun has seen all of the show. More than willing, happy even, to completely AU season 8.