The sequel will focus on the islands west of the city.

Mattsu and Yamma are two boys who live in Matsuyama. Their favourite pastime is looking for "the seven wonders of Matsuyama". One day, two men appear. What are the 7 hidden gems that they seek? Moburi, a high school girl who is like an older sister to the boys, also gets caught up in the adventure as this thriling story set in Matsuyama begins. Faced with all kinds of trouble, what will they choose for the future of their city?

Nobita had to find a topic for his summer break research homework. As he was blaming everything to Adam and Eve for sinning and causing their descendants to suffer (from homework), Doraemon decided to provide him with a gadget to observe the creation of the world so that he may write it in a diary-like report. Suneo, Giant and Shizuka eventually joined them and together they watch over the birth of tribes and civilizations. Meanwhile, the time patrol is looking for an illegal time machine whose controllers accidentally heard Giant speaking of the genesis diary project. They captured Giant and Suneo; leaving Nobita, Shizuka and Doraemon to watch over the genesis set and to rescue them. (Source: ANN)

Doraemon created a hideout for everyone in an underground cave and Suneo got lost. Everyone came back out except Suneo. After finding out that he was lost the entrance was broken. They have to find another entrance to the caves and end up in a dinosaur world. Vanho , a soldier rescued them and said that he found Suneo. When they found Suneo they found out about Vanho's people's plans. Their plan it to study Doraemon's group as human specimens and take over Earth's suface . (Source: ANN)