Miss. Code Ann. § 11-27-15

Any defendant may, not less than five (5) days prior to the date fixed for the hearing of the complaint and in the same court where the complaint is pending, serve and file a motion to dismiss under the Mississippi Rules of Civil Procedure for failure to state a claim upon which relief can be granted on any of the following grounds: (1) that the plaintiff seeking to exercise the right of eminent domain is not, in character, such a corporation, association, district or other legal entity as is entitled to the right; (2) that there is no public necessity for the taking of the particular property or a part thereof which it is proposed to condemn; or (3) that the contemplated use alleged to be a public use is not in law a public use for which private property may be taken or damaged. Any such motion, if served and filed, shall be heard and decided by the judge as a preference proceeding, without a jury, prior to the hearing on the complaint. Any party may appeal directly to the Supreme Court from an order overruling or granting any such motion to dismiss, as in other cases, but if the order be to overrule the motion, the appeal therefrom shall not operate as a supersedeas and the court of eminent domain may nevertheless proceed with the trial on the complaint. Any appeal from an order overruling or granting a motion to dismiss shall be a preference action in the Supreme Court and advanced on the docket as appropriate.