1. All of the plaintiffs' claims are dismissed.

2. The costs of lawsuit are assessed against the plaintiffs.

1. Basic facts

A. On October 26, 2011, the Plaintiffs and the Defendant entered into a collective housing business contract with the main contents that, if the Plaintiffs provided the 9,990 square meters of F forest land (hereinafter “instant site”) owned by them as business sites, the Defendant constructed and sold multi-family housing on the ground (hereinafter “instant multi-family housing”) and then pay the land price to the Plaintiffs (hereinafter “instant multi-family housing business”). The main contents of the contract are as follows:

A and the defendant of the Corporation (hereinafter referred to as "B") who has been resolved by a prop representative among land owners A, B, C, and D (hereinafter referred to as "A") in a multi-family housing project agreement and the defendant of the Corporation for the implementation of the project (hereinafter referred to as "the defendant of the Corporation") shall enter into a contract in consultation with the following matters:

1. Project area: the F of Gyeonggi-do Leecheon-si;

2. Land area: 9,90 square meters/ around 3,022 square meters; and

3. Total floor area: approximately 2,000 square meters;

4. Business scale: 10-dong 80 households with the fourth floor of urban residential housing.

5. The number of households: Section 2 (Joint Business Method) A and Section 2 (Joint Business Method) shall share and cooperate as follows in order to achieve the objectives of the Project as follows:

1.(A) provide the above project site.(2) This project will be jointly carried out by A and B.

2. (B) 1) the formulation and authorization of the project plan, the permitted work (including permission to change development activities for dividing four parcels) 2) the completion and sale (including civil engineering, construction works, landscaping works, sale in lots, defect repair, etc.) 3) the project abandonment note (including lien) at the time of discontinuance of construction (not less than 60 days) shall be submitted to A as notarial deeds at the time of conclusion of this contract under Article 14. 4. 4) the financing necessary for the implementation of the project (including any construction designer, the construction work from the time of permission to the time of completion of construction and the registration of preservation) 5 A and B shall be as to the progress of the project.