In a world, where a number on the neck shows how happy people are, Kristóf (hiding his number with a turtle-neck) waits for the mandatory Annual Happiness Measurement. In the checking room, first, the contrast material is injected into his body, as every year. But this time, the examiner is shocked, when she realizes, Kristóf is a problematic 21. This happiness level barely exceeds the critical minimum limit. If he goes below 20, he has to be reported to the authorities. On his way out, he bumps...