What kind of a story is this?!

story is somewhat good.
chapters are to short to give a proper review.
a suggestion, if you are going to have your chapters this short, then maybe update every day.

Trial, not trail. "asked the Minister of Magic. (period here and capitalize his title). "Not guilty", he responded. Cell, not sell. Their, not there. Who's there, not whose there.

PLEASE, get a beta. As short as this is, there shouldn't be so many missing words and bad sentence structure. "If you visit, you will find" OR "if you visited, you would find"; "in the center." (you left out a word). "a new new cell conceived ('d', not 's') for someone in particular. That person (or that someone) was in his cell trying to ignore the constant presence of the dementors." They, not they, to begin the next sentence. The trial that put HIM in this situation. (I'm?) The trial that CHANGED (not change) HIS LIFE (not is live)