As their high school days draw to a close, the original members of the Light Music Club face graduation. In a bid to savor their remaining time, the girls opt for an overseas adventure. With Ton-chan, their beloved club turtle, nudging them in the right direction, they settle on London for their escapade. Yui Hirasawa, Mio Akiyama, Tsumugi Kotobuki, Ritsu Tainaka, and Azusa Nakano embark on a journey filled with sightseeing, impromptu performances, and culinary delights, all interspersed with their charming clumsiness. However, as the clock ticks, bittersweet moments of singing and farewells mark the end of this chapter. Yet, amidst the partings, the enduring bonds of friendship forged by these girls will endure far beyond the final curtain call.