The Tesla Portal

Professor Tesla has been working for years on the way to travel through time using portals. Since the day he was betrayed, he has lived locked up in his house without hardly leaving. His obsession in accomplishing his goal has blinded him and made him completely abandon his own. His close circle has taken him for crazy, and nobody seems to worry about him anymore. But... there's someone who still does. A Corporation with interests in his work has been spying on him for a long time and has a plan: they are waiting for Tesla to achieve his goal so they can then snatch his advances. In the future, they plan to use his research to get control of the population and become masters of everything. However, they did not count on Tesla -who knew he was being watched and followed-, discovering the corporation's plans and devising a plan so that his "creation" would never end up in inappropriate hands...