Digimon Tamers - Season 1 Episode 25 Brave New Digital World
Overview: Once the gang enters the digital world Rika spots "satellite" hoping Calamon would be there so they walk along trying to find Calumon but it turns out that the satellite Rika saw were Rock. Just then Meramon attacks and the gang gets separated into two groups: Takato, Guilmon, Henry, Terriermon, Jeri and Leomon in one group and Rika, Renamon, Kazu and Kenta in the other. Meanwhile, Calumon and Makuramon also get separated.