After Agumon explains that Ryo was summoned because a powerful evil Digimon called Millenniummon captured the DigiDestined, then warped the very essence of time and resurrected previously defeated evil Digimon such as Devimon and Myotismon, Ryo quite understandably finds it all hard to believe and thinks he's having a nightmare from too many video games.
After Agumon explains that Ryo was summoned because a powerful evil Digimon called Millenniummon captured the DigiDestined, warped time, and resurrected previous defeated evil Digimon like Devimon and Myotismon, Ryo finds it all hard to believe and thinks he's having a nightmare from too many video games.