A multilingual interpreter Joo Ho-jin (Kim Seon-ho) is hired to translate for global superstar Cha Mu-hee (Go Youn-jung) during her reality dating show "Romantic Trip" with Japanese actor Hiro. Their clashing personalities lead to hilarious misunderstandings and emotional barriers, but as they travel the world together, genuine feelings emerge despite the "lost in translation" moments. This globe-trotting rom-com from the Hong sisters explores how love finds its own language beyond words, blending charm, heartfelt depth, and natural chemistry.