You were the most smart student in the school...that wasnt the case after the doomsday came..you survived! but at what cost...your whole family died including everyone you know...so you gone crazy but then you had an idea..with the last hope and equations on your mind you find a abondened bunker...atleast useable to live, you grabbed some mechanics and after months, is it months? you lost track of days..after that you finally managed to create a functioning robot Tesla!