help! can some one tell me what hack sign really is about?

[siona100]

i have only watched a few episodes and it looks really interesting! can someone tell me what is about? please??!!!

[kukutaru_ookami]

this is as good as it gets without spoilers- a player named Tsukasa is trapped in the world and his friends(not all too friendly at first)have to find the key of the twilight to get him out and figure out what happened this player, Tsukasa, is given a dumbbell shaped "gaurdian" Tsukasa also has his own little place where there is a mysterious girl in a white dress floating over a bed and a strange voice and a cat player known as "maha"

[pyropike]

hey are you talking about the whole series?