1. The plaintiff's claim against the primary defendant is dismissed.

2. The conjunctive Defendant’s KRW 922,686,459 and the Plaintiff.

1. Facts of recognition;

A. 1) The primary Defendant (hereinafter “Defendant Anyang-si”) entered into a construction contract

) The conjunctive Defendant (hereinafter referred to as “Defendant Republic of Korea”)

(3) The construction of a river with the nature-based nature-based river (hereinafter referred to as the “instant construction”) in the Incheon Regional Government Procurement Service, its affiliated agency.

(2) On December 2007, the Incheon Regional Procurement Service requested the conclusion of a contract on the instant construction, and around December 2, 2007, the Plaintiff and the Korea Comprehensive Technology Co., Ltd. (hereinafter referred to as the “Korea Comprehensive Technology”) constituted a joint supply and demand organization (hereinafter referred to as the “joint supply and demand organization”) in order to jointly implement the instant construction by setting the share ratio as 50%, and agreed that the Plaintiff becomes the representative of the joint supply and demand organization (hereinafter referred to as the “instant joint supply and demand organization”).

3) On February 22, 2008, the instant joint supply and demand company was awarded the contract for the instant construction project with the Incheon Regional Procurement Service for the contract amounting to KRW 15,913,97,700, and the due date of completion on June 27, 2011 (hereinafter “instant contract”).

b. The conclusion of the contract of this case. The alteration of the contract of this case and the increase or decrease of the agreed completion date (won) on the first 2, 201. 15, 913, 977, 70 on December 23, 201, 206 - 164, 700 - 15, 862, 813, 800 - 16. 6. 2, 205 on 2, 206. 8. 1, 205 on 2, 2015 on 2, 206. 3, 205 on 2, 206, 304 on 2, 16. 16. 3, 205 on 2, 206, 204 on 2, 16. 3, 205 on 28, 2017