Plot mapping

For the start of my story I want to start with a teenager who doesn't really know what to do with his life and doesn't really know about how to think about things. He thinks that he loves his parents but he doesn't know why he treats them so bad. He knows he is smart but doesn't know why he does so bad at school. He knows can work harder but doesn't know why he wont. The start of the story is after he comes home from a day of school and starts talking to his parents. He goes to bed and just start the new day. The day goes okay but after he goes home his mother doesn't return like normal. He makes his sister dinner and tucks her into bed. He then learns that his mother died in a car accident that after noon. He doesn't cry or anything he just thinks for a long time. The next day he goes to school the same and same things happen. He then comes home when his sister asked "where is mommy?" This is when he breaks down. and starts to cry. After all that is done he starts to turn his life around. He gets a better job and supports his little sister more and more. That is the end.