Clara and Carlos were very excited because they were missing the last piece that was found in the ancient Mayan civilization. They had to go 2000 years B.C. Without more they got on PH (their time machine). 2 hours later they arrived at their destination, they began to inspect the place a bit and they found a Maya but they could not understand anything, so they called PH to translate everything for them, PH told them that he was welcoming them and that if he wanted to know the place, they agreed, after seeing them they had loved it.

They were very happy because according to PH it was the last piece to return home, Clara looked to much fossils and Carlos looked rivers with different shapes and sizes ,Clara asked Carlos if he can bring water from the river, Carlos accepted and he measured the PH of the water with a purple cabbage to see if it was drinkable, and then he took it to Clara, later they began to investigate their "typical" foods, the language, animals and their calendar, among other things ... as they noticed that there were too many things they asked PH to made a list of all the important and interesting things, at the end they read the list , and it says the following things:

Food: Ceviche, lime soup, stuffed cheese etc.

Language: Yucatecan

Calendar: It was called (Tzolkin) had 260 days and the calendar (Haab) had 365 days.

Animals: quetzal, jaguar, owl among others...

They notice that there are too many jaguars so decide to make a graph about jaguars’s velocity in the list.

Later PH told them that the missing piece was a gold necklace that the Halach Uinic had, priests, the most powerful sector. That necklace was in a cave protected by the royal guards