The Line 22 is a bus route that runs 24 hours in Silicon Valley. During the day, it is a regular city bus. But by night, it transforms into an unofficial shelter for the homeless. Commonly referred to as Hotel 22, the bus has become a mobile testament to the painful challenges of finding housing in an increasingly unaffordable landscape. Silicon Valley is one of the richest districts in the nation, yet it has the fifth biggest homeless population in the United States. For over a decade, people have been using the "Hotel 22" bus as an alternative to sleeping on the streets. When evening falls, weary riders begin their Sisyphean journey between opposite ends of a two hour bus route. Tensions run high when people are forced to commit the most private act — sleep — in the most public of spaces.