Detective Conan: Quarter of Silence

Conan learns that a threatening letter casts a shadow over the Touto Line ceremony. The message hints at disaster if the opening goes ahead. Police, Detective Boys, and Agasa prepare for potential trouble.

During the ceremony, Conan uses his original voice to alert the police about the danger. He helps stop a runaway train and directs traffic away from the explosive zone. The plan prevents deaths and buys time to secure the area.

In the aftermath, Conan investigates Asakura's political history and uncovers involvement in the dam project in Kitanosawa. The dam's relocation altered the town and its residents' lives. The bombing becomes a clue linking the scheme to the dam's legacy.

Conan suspects the diamonds and motives are tied to Kitanosawa, prompting a plan to travel there to uncover the truth. The team prepares for a field investigation, facing old resentments. The journey marks a shift from city politics to buried local history.

In Kitanosawa, they are welcomed by a local circle: Yamao, Toono, Tachihara, Muto, and Hikawa. The five reveal they were childhood friends who returned to confront the past. Old secrets begin to surface as memories collide with the present.

Eight years earlier, Yamao was jailed for killing Natsuki Toono in a hit-and-run, tying their fates to the town's relocation. The event haunts the group and fuels long-held resentments. The past returns to complicate the present investigation.

Touma Tachihara awakens from an eight-year coma with no memory of the accident. The revelation heightens tension as old resentments and secrets begin to surface. The fragile peace of the town is tested by missing memories.

Hikawa is found dead in a field, initially ruled a suicide. Clues reveal an electroshock device and deliberate footprints laid after fresh snow. The murder deepens the mystery and points toward a calculated plan.

A jewelry-store robbery clipping surfaces, complementing the case. A destroyed cell site further narrows the field of suspects. The accumulation of evidence tightens the timeline toward a single conspirator.

The Detective Boys and Touma come under sniper fire, forcing Conan to intervene and guide them to safety. The threat raises the stakes and accelerates the investigation. Trust and teamwork are tested under fire.

As clues converge, Conan pieces together that Yamao is the bomber behind the attacks and the broader plan to recover the diamonds. The pursuit shifts squarely toward Yamao. The motive tied to diamonds becomes clearer.

Touma recalls seeing Natsuki Toono pushed into the road, and Toono confesses she was the sniper. She reveals the brutal truth behind Natsuki's death. The confession unravels a painful, long-hidden memory.

Yamao agrees to turn himself in after burying the jewels on a property in Kitanosawa. His motive, desperation to find diamonds, comes to a head. The confrontation moves toward a conclusion.

The dam becomes the focal point of the final confrontation as Yamao's bomb threat escalates the urgency. Conan engineers a dramatic diversion, carving grooves in a mountainside with a motorized snowboard to trigger an avalanche that diverts the flood away from Kitanosawa. The plan starts to succeed, buying critical time for the others.

Conan is momentarily trapped by rising snow, but Ran's call on Shinichi's cellphone revives him. He relays the final warning to his friends, and the avalanche completes its arc to safety. In the aftermath, trust is rebuilt and the dam's shadow begins to recede as the investigation moves toward closure.