Yi's worldview is best represented by a song she writes for Cera, a Weezer-esque bit of nerd rock called You Smell Like Christmas. At first the song is irritating, but it sticks in your head and just like Paper Heart, the song is annoyingly hummable.
The segments featuring real people are genuinely affecting, but the realisation that everything else is probably being acted - that truth may be polluted by hoax - gives this otherwise lightweight film a sly, subversive edge.
The film becomes more bewitching the more it loses direction. Yi stops questioning strangers and starts questioning herself. She also interrogates the ability, or inability, of cinema to follow love into its deepest mazes.