K hires MNO Corp to build a patio. MNO completes only 75% of the construction, but still sends a bill to K for the full contract price. K refuses to pay and MNO sues for breach. K does not owe MNO any money for their work, and can counter-sue them for damages. Since MNO did not complete performance, K does not owe them any money. MNO substantially performed and are, therefore, entitled to the contract price. However, K is entitled to damages. MNO substantially performed and are therefore entitled to the contract price. K is not entitled to damages.