The signal from the lost Diesel Ressha is found, but because it is so weak there might be a chance it cannot work again. Right is sent out to find it, as his strong Imagination can restore it. They learned that the previous enemy they encountered placed a bomb on Tokatti that is strong enough to destroy the Resshas, when the Ressha's brakes are discovered to be broken, everyone fears that the Shadow Line has planted a bomb on them.
由於炸彈暗影的計謀，彩虹烈車的剎車失靈!!!
而且，晴身上還被綁了炸彈!!!
眾人在烈車上與炸彈暗影展開了追逐戰。
同時，來斗為了重新啟動鎮上的支援烈車──柴油烈車，不得不脫離戰鬥，獨自對烈車進行打掃、對話，嘗試重新注入想像力能源。
最後，車上眾人利用轉車能力，順利脫險，而來斗也成功啟動柴油烈車，與同伴一同擊敗炸彈暗影。
