Metal Hero Series s09e28
Titre original : Blast Off! Unit Yuko
Ryoma's sister Yuko meets a kind old couple on a bus and strikes up a friendship, visiting them at their assisted living home on the weekends. But the old man's past as a particle physicist comes back to haunt him... someone is after his old research for unknown purposes. When Yuko gets caught in the crossfire, the residents of the retirement home spring into action as unlikely heroes to save her! But will their greatest adventure also be their last?