The Millennium Falcon is captured, along with Luke, Rey, and Chewie. Luke and Rey are immediately handed over to Snoke, and it looks like Chewie will be interrogated and then executed.
But Kylo can't let that happen. Not to his uncle Chewie, who was always there for him when his blood relatives didn't understand. Not when killing Han hurt more than it helped and only strengthened the call of the Light. He tries to get Chewie out, by saying that they need a messenger to tell the Resistance that their great hope has been captured. Because even if Chewie can never forgive him, Kylo can't just stand by and let him die.
Kylo + Chewie: Solo family feels
But Kylo can't let that happen. Not to his uncle Chewie, who was always there for him when his blood relatives didn't understand. Not when killing Han hurt more than it helped and only strengthened the call of the Light. He tries to get Chewie out, by saying that they need a messenger to tell the Resistance that their great hope has been captured. Because even if Chewie can never forgive him, Kylo can't just stand by and let him die.