Breach of contract is a legal cause of action and a type of civil wrong, in which a binding agreement or bargained-for exchange is not honored by one or more of the parties to the contract by non-performance or interference with the other party's performance. Breach occurs when a party to a contract fails to fulfill its obligation(s), whether partially or wholly, as described in the contract, or communicates an intent to fail the obligation or otherwise appears not to be able to perform its obligation under the contract. Where there is breach of contract, the resulting damages will have to be paid by the party breaching the contract to the aggrieved party.
If a contract is rescinded, parties are legally allowed to undo the work unless doing so would directly charge the other party at that exact time.
It is important to bear in mind that contract law is not the same from country to country. Each country has its own independent, free standing law of contract. Therefore, it makes sense to examine the laws of the country to which the contract is governed before deciding how the law of contract (of that country) applies to any particular contractual relationship.
The party who writes the contract can be either party as long as all terms are agreed on. The party who has agreed to the original deal has 10 days to back out of the contract whether they wrote the contract or not.