1. The plaintiff's claims against the defendants are all dismissed.

2. The costs of lawsuit shall be borne by the Plaintiff.

The Plaintiff entered into a contract for construction works and a guarantee contract is a company engaging in civil engineering, construction, electricity, fire-fighting, industrial environmental facilities, housing construction, machinery and equipment, information and communications, heating construction business, landscaping construction business, etc., and a person who entered into a contract with a D company on August 9, 201 with the Cheongan-do waterworks business entity in Chungcheongnam-do, Chungcheongnam-do.

The Plaintiff, on February 6, 2012, to Defendant B Co., Ltd. (hereinafter “Defendant B”) on February 6, 2012, is a reinforced concrete and soil work (hereinafter “instant construction work”).

) The term of construction: From February 6, 2012 to December 19, 2013, the construction cost (including value-added tax): 2,564,529,000 won was determined and subcontracted as “the construction period: from February 6, 2012 to December 19, 2013.” After that, the Plaintiff and Defendant B entered into a subcontract with the content that the construction cost indicated in the foregoing paragraph (2) was changed to KRW 2,776,910,000 on the ground that there was any change in design.

(2) On February 6, 2012, Defendant B entered into a guarantee agreement with Defendant CFF (hereinafter “Defendant CFF”) under the terms of “the Plaintiff, contract amount, 2,564,529,00 won, security deposit amount of 256,452,90 won, security deposit amount of 256,452,900 won, and guarantee period of 6 February 2012 to December 19, 2013.”

On February 10, 2012, Defendant B received a contract guarantee (certificate No. F) from the Defendant Mutual Aid Association and submitted it to the Plaintiff.

In addition, on December 18, 2012, Defendant B entered into an additional guarantee agreement with the Defendant Mutual Aid Association (hereinafter “instant guarantee agreement”) with the term “the Plaintiff, the contract amount of KRW 212,381,00, the guaranteed creditor’s amount of KRW 21,238,100, the guaranteed amount of KRW 21,238,100, and the guarantee period from December 18, 2012 to December 19, 2013, and submitted to the Plaintiff with the Defendant Mutual Aid Association a written guarantee agreement (hereinafter “instant guarantee agreement”) on December 28, 2012.

The Plaintiff’s payment of construction cost and the Defendant B’s cancellation of the instant construction contract shall be the sum of the construction cost from the Plaintiff to the Plaintiff,652,531.