An alienated high school student in Mexico City, whose chief extracurricular activity appears to be staring at the ceiling while she's humped by random men, ditches her perplexed mother and sets off on a cross-country journey of discovery. During her wanderings she meets a painfully shy young man who offers the prospect of genuine tenderness, but ultimately she deserts him too. This debut feature by Gabriel Mariño is the sort of thing critics like to praise for its "formal rigor": there are no dissolves, zooms, or inserts, and most scenes transpire in a single, straight-ahead shot with a shallow depth of field, so that characters blur as they recede from the lens. In the final shot, the young heroine, having taken to the sea in a boat and bonded with a passing whale, flashes us a small, mysterious smile before Mariño cuts to black. Wherever her secret world might be, we're definitely not invited. In Spanish with subtitles.