Digimon Tamers takes place in a world where the popular Digimon franchise is all the rage, consisting of a cartoon, video games, and the trading card game. Takato Matsuda is a huge Digimon fan that's particularly obsessed with the card game, and constantly daydreams about the universe therein. One day, he finds a mysterious blue card, which he slides through a scanner toy to use in the popular battle game. His toy suddenly glows and transforms into a Digivice, and Takato's fan-made design, Guilmon, materialises in front of him. Thrilled by the prospect of having a real-life Digimon, Takato embraces his new partner, and his adventures as a Digimon Tamer begin.Takato quickly discovers that being a Digimon Tamer is not all fun and games—in reality, it's much more dangerous than the card games he's accustomed to.