If convicted.... Probation and loss of license for 90 days (if this is your first offense).
Get an attorney. There are a number of options available. Also, search this cite. This is a very frequently asked question.
In Michigan, a "minor in possession" carries no jail penalty. However, it is a criminal conviction on your record. You are able to use a "diversion" for your true 1st offense to keep it off your record if you are successful on probation.