3 D ▁world s , ▁as ▁the ▁Ot aku ▁people ▁refer ▁to ▁themselves ▁as ▁living ▁in ▁the ▁second ▁dimension . ▁They ▁perform ▁at ▁an ▁An imation , ▁Comics , ▁and ▁Games ▁convention , ▁and ▁after ▁initial ▁re jection ▁the ▁crowd ▁che ers ▁for ▁them . ▁ ▁They ▁perform ▁for ▁Wang ▁W en ▁but ▁he ▁public ly ▁reject s ▁Chen ▁J ing ▁and ▁traditional ▁Chinese ▁music . ▁Cr ushed , ▁Chen ▁J ing ▁cho oses ▁to ▁dis band ▁ 2 . 5 ▁Dim ension . ▁The ▁four ▁Ot aku ▁students , ▁who ▁have ▁grown ▁to ▁love ▁the ▁band , ▁are ▁angry ▁and ▁refuse ▁Chen ▁J ing ' s ▁gift ▁of ▁expensive ▁an ime ▁figur ines . ▁Chen ▁J ing ' s ▁mother ▁tells ▁her ▁about ▁how ▁the ▁y ang q in ▁is ▁a ▁part ▁of ▁her ▁and ▁that ▁she ▁can ' t ▁give ▁up ▁playing ▁it ▁without ▁its ▁permission . ▁ ▁The ▁head ▁of ▁the ▁school ▁announ ces ▁plans ▁to ▁cancel ▁the ▁Chinese ▁Orchestra ▁but ▁the ▁original ▁members ▁of ▁ 2 . 5 ▁Dim ension ▁are ▁joined ▁by ▁other ▁students ▁to ▁protest . ▁After ▁the ▁head ▁of ▁the ▁school ▁continues ▁to ▁refuse ▁them , ▁they ▁organ ize ▁a ▁music ▁competition ▁with ▁the ▁Class ical ▁Orchestra . ▁An ▁inspect or ▁comes ▁to ▁the ▁school ▁and ▁both ▁orch est ras ▁play ▁their ▁music , ▁but ▁the ▁classical ▁students ▁are ▁unable ▁to ▁keep ▁up ▁with ▁the ▁Chinese ▁or chestra , ▁and ▁so ▁lose ▁the ▁competition . ▁The ▁Chinese ▁or chestra ▁then ▁en list ▁the ▁help ▁of ▁the