Alice Who Came from a Distant Star

On the final day of shooting a movie for a film study group on Iriomote Island, director Godai Daigo and his crew witness a battle between the Self-Defence Forces and a UFO. Yukkino, the heroine of the film, disappears on the same day. Two and a half months later, Yukkino suddenly reappears but is noticeably different from before. Has aliens from the UFO done something to her body?