Seven Things I Learned About Time Travel

Markus is an intelligent boy of nearly nine years old. His mother has been idle with depression for a considerate amount of time and his father no longer plays a part in his life. One day, Markus decides to build a time machine, with which he attempts to change the little things concerning his mother in such a way that her depression might just go away. Marcus discovers that you can't change everything in the past with a time machine. But what about the future?