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

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

1. Basic facts

A. On March 7, 2012, the Plaintiff received construction from Defendant C with the construction period from March 7, 2012 to May 15, 2012, 200 (including value-added tax) and completed the construction by receiving the payment of construction cost of KRW 594,00,000 (including value-added tax).

(hereinafter “instant construction contract”). B.

The Plaintiff subcontracted the interior construction work (hereinafter referred to as the “subcontract”) during the instant construction work to the construction company, Inc. (hereinafter referred to as “stein construction”) for KRW 80,200,000 for construction cost.

C. Defendant C paid the Plaintiff KRW 623,700,000 in total as the construction price of the instant construction contract.

On November 12, 2012, E operated by Defendant C was closed.

E. Defendant B Co., Ltd. (hereinafter “Defendant B”) is the representative of Defendant C.

Defendant B paid KRW 30,000,000 to the name building.

【Ground for recognition】 The fact that there has been no dispute, Gap 1, 3 evidence, Eul 1 through 4 (including Serial number; hereinafter the same shall apply), the purport of the whole pleadings and arguments

2. The parties' assertion

A. Plaintiff 1) and Defendant C agreed to construct parts of the instant construction differently from the original drawing. Accordingly, the Plaintiff changed the roof from the board to the string to the string, reduced 4,724,170 won, and the Plaintiff added 82,300,000 won to the total of 4,067,000 won due to a material change. The additional construction cost occurrence details are as follows. The increase in the number of items (the cost) (excluding the portion excluded from the change of string, 4,724,170 materials from the original roof board) (the portion excluded from the change of 2,93,260,003,260, 2603, 2603, 2603, 26043, 106, 1007, 1006, 1007, 1007, 209, 2006, 2007, 300.3