ˈælstɚ tˈiːmz ˌʌp wɪð ɐ ɡˈɜːl hiː mˈiːts ðˈɛɹ, pˈælti, tə kˈɑːmbæt ðɪ ʌnpˈaɪləɾᵻd bɚsˈɜːk fˈuːhɹə ðɐthɐzbˌɪn ɐtˈækɪŋ vˈɪlɪdʒᵻz, æz hɪz lˈaɪdʒɚ zˈiəɹoʊ ɪz foːɹtˈoʊld təbi ðɪ ˈʌndɚɡɹˌaʊnd wˈɜːldz sˈeɪvjɚ ænd ðˈʌs ðɪ ˈoʊnli wˈʌn ðæt kæn stˈɑːp ɪt.
Alster teams up with a girl he meets there, Palty, to combat the unpiloted Berserk Führer that has been attacking villages, as his Liger Zero is foretold to be the underground world's savior and thus the only one that can stop it.