Time Traveler Luke. England. Newton and the Philosopher's Stone

Distraught after learning Paul is lost in time, Luke puts the gifts from his historical friends together to find a memo left to Paul from English scientist Isaac Newton. Luke travels in time to meet his personal hero, but learns that Indiana has taken the Newtonian telescope which is needed to forge the Philosopher's Stone. Luke travels through Stone Henge and the Big Ben in a quest to retrieve the Philosopher's Stone. But realizing the Stone is too much for man to handle, Luke destroys it from existence. Newton tells Luke that the gifts from his friends throughout history are actually pieces of an Astrolabe which, once put together, will reveal Paul's location.