Dave Seville, a frustrated songwriter, finally ushered in a turning point in his life after accidentally discovering a singing chipmunk trio.These three little musicians - the naughty but charming leader Alvin, the smart and calm Simon of Zhido, and the honest and cute, easily moved Theodore - not only awakened Dave's long-silent creative passion with the harmony of nature, but also quietly changed his lonely and closed life trajectory.Their encounter is like a wonderful concerto composed by fate, which brings each other to an unexpected stage of life.