Starting his second year in college, Mark Fishbach, AKA 'Markiplier' on YouTube, has been steadily growing in his studies and online success. People find him funny, charming and an all around nice guy. But Mark wonders if he's too nice, since he's never been able to find a boyfriend. His friend, Michelle or 'Minx', tells him that he needs to grow a pair and find that good dick before his ass shrivels up....and dies.
In another upcoming, and seemingly boring year of college, Mark figures that this year might be a little more exciting, especially after he meets a certain green-haired Irishmen. But there's still one little problem, that keeps him from getting close to anyone.
A dark manifestation he calls 'Darkiplier' has been straining his chances at love since he was a kid. Dark looks almost exactly like him, and comes with a range of unnatural powers that keeps him on the ropes. So Mark looks for answers, but, he never expected to find someone with the same problem as him.
Sean's relationship with Mark has been a bit strained ever since the 'Septiplier Ship' got out of hand. When Mark suddenly surprises him with an unexpected confession. From that moment, Sean knew his life would never be the same. For things are not all that they appear. Something is off about Mark and things are quickly escalating into something much darker. Sean is about to learn that 'Dating Darkiplier' comes with its pleasures and its pains.