All I can think of is "Creatures attack, peoples' virtual pets ask their partners to play a game or something along those lines, partners say 'yes', light show happens, Digimon appears".
Anyways, Akemi and Akira are now heading toward the main scene of the action. Poor Akira has no clue what's going on still XD;
Edit: Seems like people are choosing what Digimon to fight? I'll probably go edit that part of my post then :|b