When David Chen arrived in London with a dictionary and big dreams, he discovered that speaking English and understanding it were two different worlds. Lost in translation, he begins collecting English jokes in a worn notebook, determined to decode why natives laugh at things that make no sense to him. From puns that twist his tongue to sarcasm that flies over his head, each joke becomes a lesson in culture, friendship, and love. As he struggles to make his colleagues laugh, David finds that humor isn't just about words—it's the bridge between hearts, and sometimes, the punchline to life itself.