A storage medium storing a multimedia image stream and a text-based subtitle stream, and a reproducing apparatus and a reproducing method therefor are provided to reproduce the text-based subtitle data stream recorded separately from the multimedia image stream such that the subtitle data can be easily produced and edited and a caption can be provided in a plurality of languages. The storage medium stores: image data; and text-based subtitle data to display a caption on an image based on the image data, wherein the subtitle data includes: one style information item specifying an output style of the caption; and a plurality of presentation information items that are displaying units of the caption, and the subtitle data is separated and recorded separately from the image data. Accordingly, a caption can be provided in a plurality of languages, and can be easily produced and edited, and the output style of caption data can be changed in a variety of ways. In addition, part of a caption can be emphasized or a separate style that a user can change can be applied.