gets a bit sneaky, they find the computer that's running the sign when they do a little bit of hackie hackie. they're posting they video from shanghai on the billboard of this building right on the harbor of hong kong, seal it up again and off they go. >> this really happened? they could have arranged for this to be an advertisement of theirs, and then they make it look like it's an undercover deal. a hack that they did, instead it's a setup. >> i imagine with all that technology and that huge sign, computer that runs is it is going to be in some tech guy's office, you're not going to the roof. that's the only thing that makes me fishy. it could be simple editing. you could superimpose that image over that real easy. >> guys up on the roof, i believe you. >>> chris is busy in class -- >> he's about to get the surprise of his life. >> the special visitor who makes his day. >>> and the devil's wheel of octoberfest. >> oh, that looks like fun. >> no it doesn't. >> drinking and fun. what could possibly go wrong? >>> to want see a video again and again? head over it rightthisminute.com, find ton