A massive force of underground BETA is heading towards the Soviet Base, and there's no time to do anything but pack up and leave. Yui stays behind to destroy the Type 99 Cannon, but the Soviets want it for themselves...
We sent you there because you performed so 
splendidly in the underground attack last month.
Dado su excelente desempeño en la 
invasión subterránea del mes pasado,
Dado tu excelente desempeño en la 
invasión subterránea del mes pasado,
Mandamos vocês porque se saíram muito bem no último ataque subterrâneo.