Mari's not just meeting historical figures, she's actually changing how they think about their own discoveries. Each episode pulls off the trick of making real science feel like adventure, not a lecture. The mystery of her missing father threads through every jump backward, turning what could be a dry educational show into something that actually makes you care whether she makes it home.
Mari Hayase gets pulled into an unexpected adventure when she discovers she can travel backwards through time. Armed with nothing but determination and a pair of friends who've jumped in headfirst with her, she sets out across history to find eight brilliant scientists and inventors whose discoveries shaped the modern world. Each jump sends her face-to-face with towering figures like Benjamin Franklin and Thomas Edison, but meeting them is only half the battle. Mari needs to understand what connects these eight minds across centuries, and why she's been chosen for this peculiar quest. The show balances comedy with genuine wonder at watching history unfold. Mari stumbles through different eras, navigating period-appropriate mishaps while her companions Waka and Jun scramble to keep her from accidentally breaking the timeline. Part detective story, part educational romp, the series asks whether changing the past is even possible, and whether some discoveries are meant to happen no matter what. This is for viewers who enjoy time travel logic puzzles mixed with character-driven humor and a dash of historical intrigue.