A. On November 10, 2014, Defendant B awarded a contract to Defendant Lone Star Construction Co., Ltd. (hereinafter “Defendant Lone Star Construction”), setting the contract price of the new Seoul Gangnam-gu Seoul as KRW 737,000,000 (including value-added tax) and paid KRW 73,700,000 as the contract deposit to Defendant Lone Star Construction on November 14, 2014.

B. However, around January 21, 2015, Defendant B and C are Defendant Lone Star Construction and the above.

The construction contract was terminated, and the next day, the non-party corporation Dmerd (hereinafter referred to as the "Dmerd") was the same.

The construction cost of port construction was determined as KRW 679,800,000 (including value added tax) and Dmerd again subcontracted the construction to Defendant Lone Star Construction.

C. On November 17, 2014, Defendant Lone Star Construction awarded a sub-subcontract for construction cost of KRW 137,000,000 for steel-re-subcontracted construction works and non-re-subcontracted to the Plaintiff during the instant construction work (hereinafter “instant construction”).

Accordingly, the Plaintiff performed the instant construction work from December 22, 2014 to March 14, 2015.

E. On March 21, 2015, the Plaintiff settled the instant construction cost of KRW 167,00,000,000 with Defendant Lone Star Construction. Defendant Lone Star Construction agreed to pay the remainder amount of KRW 45,000,000 by March 31, 2015, respectively, until March 31, 2015. On the same day, Defendant B agreed to pay the Plaintiff a direct payment of the construction cost in addition to the amount of KRW 42,00,000 with KRW 42,00,000,000, and by May 31, 2015.

F. On April 24, 2015, Defendant Lone Star Construction made an agreement with the Plaintiff on the mutual performance of the following: “The Plaintiff, upon receipt of the remaining construction cost of KRW 73,00,000,000, is promised to remove the daily materials after the non-payment, and the Plaintiff, until the remainder is paid, will appoint a lien manager, and the lien manager’s salary shall be borne half by the contractor and the subcontractor.”