They have sent you a letter...
You carefully push at the door of the place you used to call your workshop, and wince as it creaks as though someone is screaming within the foundations. But you press on, a small shiver running through your body, and step inside. There's ink dripping from the ceiling, resembling that of blood in a horror movie, but you push those thoughts away. After all, you've worked here for years, and made all your best creations here, it isn't a place to be scared of.
Reaching into your pocket, you pull out the crumpled letter, and straighten it out to read the words that are written there. 30 years really does seem to slip away, but being summoned back here, it's all flooding back to you. Flooding is an odd choice of words, huh? Could it be the black that's seeping into your shoes that makes you think of that? That doesn't matter now, you need to keep going.
As you progress through the corridors, you find various wooden cutouts of your old creation, Bendy. He has a smile painted on his face that just reeks of fake enthusiasm, and a bitter laugh escapes your lips. He must hate you for replacing him with a better design. That is, if cartoons had feelings, which you're pretty sure they don't. The pentagrams are a little unsettling though, seeming to be drawn behind Bendy, as though suggesting some kind of otherworldly connection. Probably just Joey joking around, or at least, you hope so.
Nearby, you find an axe propped up against the wall, and you lift it into your hands, deciding that for whatever reason, you'll benefit from doing so. Those slitted eyes seem to be following you, taunting you, and in a fit of unprovoked rage, you swing your axe and cut the cocky character into splinters. It seems to bring you a small dose of relief, and you turn away, grabbing some tins of soup from the shelves to keep your strength up, before moving on.
Just a few steps down the corridor, you glance back, expecting to see the shredded drawing, and you find him unharmed, his smile just as mocking as before. It must be the fumes, you tell yourself, you're hallucinating or something. That's the only reasonable explanation, and it's not like there's any other. Not even the note pinned on the wall that reads, 'Turn on the ink machine' but seems to be written in ink.
Of course it is... what else do you write a note in, blood? You scour the halls looking for various cogs and pieces to repair the machine, someone really did a number on it, and the neccesary components are scattered all over the workshop. But as boring as it seems, you only have one objective in writing, and you get the machine working again, which whirrs to life with a rumbling hum.
You're drawn to the lever which will activate the machine, but you don't touch it yet. First, you return to study something you saw earlier, another of your abandoned creations. Boris, a 3D model of the cute canine, but... with his ribcage torn open, and his organs replaced with cogs and gears. You can't recall why this was requested, but it seems rather ominous, and you mutter a small apology before returning to the ink machine, and taking a deep breath.
Then you turn the machine on, and listen to the methodical chugging of ink as it flows through the pipework. What did that achieve? Nothing seems to have changed, except for that awful feeling that someone, or something, is watching you. Trying to dismiss it, you go to your old office, which is locked, and remember a key you earlier unearthed. Trying the key in the lock, it gives a soft click and swings open, revealing many planks of wood, forming a barricade across the darkness.
It looks like it's trying to keep you out... or keep something in. The sound of the ink sloshing is much louder here, and as you lean in to investigate, something erupts from the ground, startling you. It seems to be created entirely from ink, about six feet high, and with eyes blazing like soulless voids of darkness, it breaks through the barricades, prompting you to flee.
Though before you do, you realise that the shape it resembles is that of Bendy, a very distorted, perhaps slightly decayed version? You don't dedicate much time to studying it, running for your life as you hear it sprinting after you with a threatening gurgle, focussed only on getting away, until the floor gives out and you fall rapidly, no sound in your lungs to scream.
But the drop isn't that far, and once you land and get your bearings, you grab your axe again, now desperately hacking at the wooden pieces which block your exit, until they snap and fall. Bendy doesn't seem to be following you any more, but you're fairly certain now that whatever he's become, is alive. Especially as your eyes are drawn to the inked scrawl on the wall, 'The creator lied to us' and behind you, you can hear something whispering, "Traitor, traitor, traitor, the creator is a traitor."
Ignoring the chanting, you slink through the small gap, and reach for the exit door...
Then everything goes black.