1. The plaintiff's appeal is dismissed.

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

The purport of the claim and appeal is the purport of the appeal.

1. (1) The Plaintiff, while using the trade name “E”, committed an act on behalf of an enterprise, government office, or school for management strategy, vocational counseling, etc., and concluded a service contract on April 29, 2016 with Defendant D and F’s exercise at KRW 19,312,00, and held a one-time workshop event from May 3, 2016 to May 4, 2016 for Defendant D’s implementation of the above service contract.

(2) Around March 2017, Defendant D had examined the holding of the “G” event (hereinafter “instant event”) in the following year, and Defendant C (hereinafter “Defendant B, etc.”) who was the head of the audit and inspection team belonging to Defendant D, the head of the audit and inspection division belonging to Defendant D, began to discuss with the Plaintiff the venue, schedule, etc. of the event.

(3) On April 25, 2017, the Plaintiff sent a written proposal to Defendant B, etc., stating the place of the instant event (around April 25, 2017, the grant of Nos. 1, 2, and 3) and the schedule for the instant event for one-half day. After that, the Plaintiff sent a written proposal to Defendant B, etc., stating the estimated cost (educational expenses, operating expenses, accommodation expenses, meal expenses, etc.) of the instant event, along with Defendant B, etc., whose planned site for the instant event is narrowed to the strong hill, and subsequently, submitted a written estimate to Defendant B, etc. around May 23, 2017.

(4) On July 2017, Defendant B, etc. notified the Plaintiff that the instant event was not held.

(5) The above facts do not conflict between the parties, or are acknowledged by Gap evidence Nos. 3, 4, 8, 13-1 through 7, Gap evidence No. 16, and Eul evidence No. 1, and the purport of Gap evidence No. 1 as a whole, and there is no evidence that interfered with this.

2. Judgment on the plaintiff's claim

A. (1) The Plaintiff concluded a service contract for the instant event with Defendant D through Defendant B, etc. unilaterally, and the Defendants unilaterally concluded such contract.