Thank you, jezevex, and Caleyunior for sharing the intriguing synopsis!
The name alone makes me wince because of the omnipresent web "404 Error" which is used
"to indicate that the browser was able to communicate with a given server, but the server could not find what was requested. The error may also be used when a server does not wish to disclose whether it has the requested information."
Wikipedia
I can see how that could potentially be used in a metaphorical sense for human relationships.
I really want to see the girl with the manga eyes... but I will wait for the eMule link to finish downloading rather than see Spoilers at the Vimeo page.