In the desert, T.K. finds the Crest of Hope. Later, Izzy finds out and explains to the kids that the Digital World is inside a computer network, and that they are all separate bits of data. This makes Tai cocky because he believes it's just a video game and he can't be harmed. In the pyramid, Datamon captures Sora and Tai finally realizes what happens in the Digital World reflects in the real world. This makes him freeze up with fear, and he is unable to save Sora.
—killer_pikachu