COGNOVIT PROMISSORY NOTE OF JOHN D. OIL AND GAS COMPANY, INC

COGNOVIT PROMISSORY NOTE OF

JOHN D. OIL AND GAS COMPANY, INC.

For value received, the undersigned, promises to pay to the order of GREAT PLAINS EXPLORATION, LLC (“Maker”) the principal sum of Six Hundred Thousand Dollars ($600,000.00)   with interest at the rate of  Eight Percent (8%)  per year.  Payment of Principal and accrued interest is due and payable upon DEMAND.  This note replaces a $600,000 cognovit promissory note issued by Maker to John D. Oil and Gas Company on April 7, 2009, which note is hereby cancelled.

The indebtedness evidenced hereby may be prepaid in whole or in part at any time without penalty or notice.

Notwithstanding anything to the contrary which may be provided for, or implied by, the other terms of this Note, the entire principal balance, together with all accrued and unpaid interest and any other charges, advances and fees, if any, outstanding hereunder, shall be due and payable in full on demand.

The Maker waives demand presentment for payment, protest, notice of