I'm not sure if this were all in chronicle order,
but I'll try summarize and see if this was make easy sense of it's plot.
(also notify I won't mention the MV's, lyric or symbolic signs or deep meaning, except the timeline plot.)
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It started in an ordinary timeline, all of them 7 were already meant as friends they and made themselves some group. They split up later. In V's perspective, his situation was kinda trippy about his parents, R-M's job at the gasoline was low payment nowadays. Everyone were dealing their lives at the time and things just get frustrate, they just want to live care free. Later from Jin's perspective, he sees lot of things that seem un-natural that can predict many bad things will occur. One of them such R-M live homeless in his poorly apartment, none of them barely is with their family or has a good life. After reuniting for so long, they all started living somewhere no one can find them and is their secret club where they can just enjoy and live full care free, everyone were just fooling and do what-ever they want so to lose their minds from depression by spray graffiti in public, being drunk, partying themselves, making trouble with the traffic jam cars and kinda breaking the law, just show how the world meant that they deserve what they wanted and gave payback to society. It has been going around few time and non of them were caught and yet un-identify their group. They thought that was their only happiness that can break out from their cliffy situation, but it wasn't easy.
It's been days, V still have the pressure and started drinking alcohol from overhearing his parents still fighting, he tried to push over his feelings from keeping his hatred inter-fear but it keeps getting worse, he immediately ram inside the room and bang his old man's head, he lose his mind by stabbing and killed him. His mother didn't know what else to react but was too scared she ran away, V didn't realized what he did was a mistake, his mind was scattering and cried at the other room. After knock himself out and found napping on the side wall he started fear himself and didn't meant the crime to happen and blame himself "not innocent" and a "murder" on his statue of his life, he cried again and try calling for help. Lately everyone haven't heard from him, V later come towards a place surround nature of some meet up place he and everyone often come around. He laid himself on the brick and look at a picture of him and his father, he crumble the photograph and try forgetting those memory. He later woke up and saw R-M and everyone. It had been a while since they reunite again, Jin recorded them just to remember one of the moments and carefree they do. V just keeps his secret hidden and fake his emotions around everyone, by the sunset came around, he stood himself on a brick while everyone was on the other side, it was meant for him thought of "suicide" of falling as a preparation, he tries to forget because he still has everyone and was the only thing he live for. Everyone all stay in the hideouts while R-M has gasoline job to do at the time. R-M started writing something on the mirror of some deep message. Later they visited him at the gasoline and say to get out of here. They ended on the beach were everyone would thought this could be their last day being together for a while before splitting apart again. Everyone all sat and look at the scenery of the beach. V still kept his secret and the fact his been
sleeping in their hideouts lately because he ran away from home and probably left the dead body in there. He look at some tall ladder and thought it's a great view to jump. He over think himself it was a bad idea, but telling everyone about his
secret would probably make everyone go apart with him, him a murder, upset everyone would thought him as un-trustworthy of a friend and without him probably would be suited and better if he didn't exist and wasn't around, he has nothing left. Jin realize V was climbing on it and wonder what was he doing, everyone all look at him think it would be too dangerous, V just want everything to let it go, he ignore, then jump and drown himself in the ocean. After days, his body was un found and was titled " dead", it was most miserable day they ever had. Everyone started to feel down and loosen their grip, each one by one create suicide. Rap monster kinda get over from his friends death and feel to quitting his job, he lite a cigarrete that would cause probably explosive(un-identified). Junkook also got over his friends death and try to stay strong, Suga looses his mind, Jungkook started to fight and help Suga get over it but then Suga starts hitting object show how everything emotionally would felt, as the mirror break Jin could predict his face tells everything that everything will corrupt and turn everyone's life to pieces onto flames. Jimin couldn't take it losing important people of his life and everyone get pretty down he can tell everything will just gone worser and worser, he stay in the cold bathtub for long, then just pass himself away. J-Hope started taking pills, he goes for a walk and got overdosed and probably never walk up again. Suga after fights and messing around, he burn his whole room onto flames and probably burned himself, that's 3 commit suicides. Jungkook on the other hand everything was all in the same day and him during eve, he got over too depressed he feels the hate and don't care about everything. Some gangs were passing by and he don't care bumping onto them, the guys were piss at Jungkook treating them with rudeness they start bullying him and finish him on the side while Jungkook didn't really care being hurt. After few minutes he just kept on walking with his mind blank, he didn't really care about what his doing, or where his going or what the world is going on, everything on his mind was hate and depression, he didn't realized a car went by and hit him, leave him injure and probably also "dead". Jin was the last out of everyone, staying in his room wearing white probably from one of their funeral each one by one and lay out all the white lilac petals on his room meant all of his friends, and burn them as meant everyone "dead".
In the end it still un-notified if Jin even killed himself or still live while everyone was at heaven, but surprisingly V ends up alive getting out of water in the end, so he survive, all of the killings were un-necessary.
There is no need to pressure and lose your life because you lose an important people, you never knew if it's miss-understood, everyone has reason, so live, don't take it away.