Ép. 1: Rai découvre une boîte mystérieuse alors qu'il rentre chez lui avec l'argent du prix après avoir remporté un tournoi de cartes.

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A boy named Rai remembers it is his mom's birthday, and decides to go to the city to find her something. While in town, he is challenged by an old foe and finally forced into the card stacking competition. There, he first encounters the Tigeroid and Tai Chi Chaser, Tori. Tori has to leave the competition, and by default, Rai wins. Rai is walking home with the prize money when he discovers a box in an antique store. He rushes home to show it to his mon, and encounters his first Dragonoid adversary, Luka. In an odd series of events, Rai's home is destroyed and his mom mysteriously disappears. Rai becomes hysterical, so Tori use the "sleep" character to knock him out. The Tigeroids take Rai back to the Tigeroid Airship. (Source: Taichi Senjimon Wiki)