I signed a two-year contract with a company in India and started working. After only two months, I had to leave. Now, the company is demanding a large sum of money from me. Is this kind of contract legally valid in India?

Yes, your contract is legally valid in India. However, under Indian law, you may be liable for damages due to breach of contract. The company can only claim reasonable damages, considering the period you worked and the financial losses they incurred due to your departure. You can negotiate with them or seek legal advice to understand your obligations and potential options.