Professor Imes is a renowned archaeologist who has been investigating an artifact known as the Sun Key, which potentially has the ability to unlock the greatest secrets of the lost Mayan civilization, and is rumored to be housed somewhere within Chichen Itza. However, on his latest expedition, he and his team mysteriously disappeared while exploring different temples between the dates of June 22 and July 14; only his guide, José, was able to escape unharmed and return with some artifacts that the team found, hoping they will help the player in his quest to find the professor. The three, after talking with the professor's secretary Anne, travel to Mexico and into the ancient city to look for clues.