So, for the film, it starts with the guy getting sniped at Sky Tree (trailer). I'm sorry, I forgot his name and this is a problem. I'm bad with names, so I apologize. ^^
Of course super Conan figured out where the shot probably came from and went in pursuit of the shooter. Also, Sera was around in Sky Tree as well, and this part I couldn't catch. I don't know why she was there, as she was keeping her self hidden. After the shots, she went out too. Luckily, she met up with Conan and the two pursued the sniper. Of course this means a high-speed chase throughout the area. Oh, and Conan did some more of his, "should be physically impossible" stuns with his skateboard like always. lol
Anywho, the FBI is after this sniper as well. It seems that during a war or battle, the guys involved (the Navy SEAL characters) wronged Timothy Hunter's character. They were being sniped for not coming forward and confessing. Of course there's a twist in this. Hunter was the main suspect...well, that's was my impression anyway.
After each victim was killed, the killer would leave die at the shooting scene. Each die had a different number (5, 2, 3, etc). Each area the sniper used was meant to make a pattern. Conan figured it out though and went to try and stop the sniper from killing the last navy seal. Before that, though, Sera was trying to figure everything out too and figured out who the second victim was (but were too late) and the third one. Conan almost prevented that one, but he also did something that surprised me given his character. He used the soccer ball, a giant sized one to block the shot. The sniper was sniping the victim from a faroff bridge. The victim was riding the train (he was tricked into it). Anyway, Conan got to another nearby bridge and, like I said, blocked the shot, but he was careless. The sniper sniped him (he didn't know it). I was surprised at this tremendously. Sera managed to save Conan. It would've been a clear head shot if she wouldn't have taken the bullet, so for the rest of the movie she's in the hospital.
Luckily, Okiya was around...who was sniping the sniper. When the sniper failed, he went back to Sky Tree (where Ran and the others were), and was pretty much holding them hostage (Sonoko, Ran, Ayumi, Mitsuhiko, Genta, Ai). Okiya was trying to snipe the guy, but the guy had explosives set up, and let them blow, knocking out the power (oh it was at night, btw or early evening), so Okiya couldn't get a clear shot. He had night goggles, the culprit, while still holding a very frightened Ayumi. Camel and Jodie were there as well, trying to figure out what to do.
Conan got and idea and called up Ai (as he realized that the other sniper was Okiya) and told her his plan. Use their badges. Earlier, the kids got new badges and when you pushed the button on it, it sorta had a flashing light and a high pitched, mosquito-like sound. By doing so, Ayumi's badge started to make noise. Once the kids heard it, they took out their watches, turned on the flash light, threw it at the culprit, who let Ayumi go because of all of the light.
Fortunately, Okiya now had a clear shot. Unfortunately, Ran didn't know of the plan. The guy started to shoot around wildly since he was blinded by the light. Ran went after him, as she'd said much earlier in the film that she could never forgive such a person. She ran to him, but tripped over and Okiya, once again, couldn't shoot. No light. Conan started to freak out as he was seeing this, so he did something even more "impossible" than the snowboarding thing in movie 16. lol You just have to see it. He used his soccer ball thing to create the light. The professor created "Hanabi Soccer Balls" or whatever. lol Conan used his suspender thing to dive down off of the building he was on, which ended up throwing him back up, he powered up his shoe while in the air, and then took out the firework soccerball, and kicked towards Sky Tree. With the light, Okiya sniped the culprit and everyone was safe. Okiya, the entire time, was trying to find connections as well and figured it out on his own..