1. The plaintiff's claim is dismissed.

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

1. Facts of recognition;

A. (tentative Name) C Regional Housing Association Promotion Committee (hereinafter referred to as “C”) is the implementer of the project for constructing a new apartment of Pyeongtaek-si District Housing Association (hereinafter referred to as “Seoul”), the Defendant is C’s agency business, company D (hereinafter referred to as “non-party company”) is the company engaging in outdoor advertising, advertising production, and installation business, and the Plaintiff is the company subcontracted the following advertising services from the non-party company.

B. On December 31, 2015, the non-party company entered into a contract with C and the defendant on the vicarious promotion of advertisement for the said new construction project (hereinafter “instant contract”). The non-party company's business to be performed in the instant contract is "1) compilation and execution of the advertisement budget, advertisement, public relations strategy, advertisement, promotional, planning, production, management of promotions, 3) production and installation of administration programs, 4) selection of media and media (including newspapers, magazines, Internet, etc.) production and execution of outdoor advertisement, installation, 5) installation, CI, and 6) other business related to the advertisement, and the contract between C and the defendant (Article 2), and the non-party company's business related to the advertisement, and the contract between C and the non-party company's business owner and the non-party company's business owner (Article 500 million won) under the contract between C and the defendant (the non-party company's total amount of KRW 1500,000,000).

After the conclusion of the contract, the defendant and C were notified of the transfer by a certificate with a fixed date on the 30th of the same month, and the next notification was received.