Lin Dong is an Agumon who has traveled to the digital world and has a "entry copy and upgrade system" plug-in. He improves his own strength by copying the entries on other Digimon and upgrading them. In Agumon Village, he was invited to become the dual village chief after a tie with the village leader Agumon Shi Hao. Lin Dong accumulated upgrade points through exercise and combat, successfully upgraded the entry "Physically Strong" to "Extraordinary Physique", and acquired new skills.
In an external challenge, Samurai Agumon defeated Shi Hao. Lin Dong took action to defeat him and copied Samurai Agumon's "Basic Sword Skills" entry. Later, Lin Dong tried to fuse the "Explosive Fist" and "Diamond Claw" skills and successfully created the "Explosive Claw". He also plans to build a tachi to better use his sword skills.
After Lin Dong learned that the leader of Heiya Ancient Village evolved into a dark dragon beast, he decided to take the initiative to eliminate the opponent. He travels to Binance Island and becomes a partner with a Hackmon.
At the same time, while Lin Dong was getting along with Hackmon, the two boys' relationship continued to heat up and they became close partners.
Lin Dong and Hackmon defeated the Dark Dragonmon and subdued the Black Agumons.
He also discovered data crystals and distributed them to Shi Hao and other Digimon to help them evolve. Eventually, Lin Dong himself evolved into Greymon EX, greatly increasing his strength.
After successfully resolving the crisis in Agumon Village and subduing Black Agumon, Lin Dong realized that the vastness and mystery of the digital world were far beyond his imagination. In order to pursue more powerful power and explore unknown areas, he and Hackmon decided to leave Agumon Village and embark on a journey
