# I Mistook The Blind Billionaire For My Brother's Dog - URL: https://runotoon.com/blog/i-mistook-the-blind-billionaire-for-my-brother-s-dog - Category: [Series spotlights](https://runotoon.com/blog/category/series-spotlights) - Author: Runotoon Editors - Published: 16 Oct 2026 (2026-10-16T02:10:22Z) I Mistook The Blind Billionaire For My Brother's Dog: 28 episodes of mistaken identity on Runotoon. Watch the first 20 episodes free in your browser, no app. I Mistook The Blind Billionaire For My Brother's Dog starts with one wrong door and a very wrong assumption. Eileen moves into what she thinks is her brother's apartment. Instead of her brother, she finds a blind man chained inside. Since she has no idea who he is, she decides he must be her brother's pet dog, and she starts caring for him in her own quirky, gentle way. Then she learns the truth about the man in the room. ![I Mistook The Blind Billionaire For My Brother's Dog](https://media.runotoon.com/blog/9139a6f3-d9bb-47d1-a8cf-67e65fa0ca03.jpg "I Mistook The Blind Billionaire For My Brother's Dog") **[I Mistook The Blind Billionaire For My Brother's Dog](https://runotoon.com/series/i-mistook-the-blind-billionaire-for-my-brother-s-dog-a039cb)**: I Mistook The Blind Billionaire For My Brother's Dog, first 20 episodes free ## The Setup: A Wrong Apartment, a Chained Stranger The first part of the series leans on Eileen's confusion. She does not walk into a normal situation. She walks into a man in chains, and her brother is nowhere around. Her conclusion is not sensible, but it fits what she thinks she knows about her brother, so she acts on it. What follows is a run of small, domestic moments. She feeds him. She talks to him. She treats him like an animal she has decided to look after. Nothing about her care is cruel. It is odd, soft, and matter of fact, which is what makes the misunderstanding work as comedy and as a slow build. Derek, the man in the room, is blind. He cannot see her, and she cannot place him. Neither of them has the full picture, so every scene runs on half information. ## What Happens in I Mistook The Blind Billionaire For My Brother's Dog The turning point arrives when Eileen finally works out who she has been looking after. He is Derek Ashworth, a CEO, and the apartment she walked into is his. She has not been helping a pet. She has been trespassing in a billionaire's home and treating its owner like a dog. Her response is to run. She flees rather than explain, which leaves the mess unresolved and the two of them apart. They meet again at a gala. This time Derek is fully sighted, and he seems to recognize her all too well. That moment flips the balance of the story. In the apartment, she was the one with the advantage. At the gala, he is the one who knows exactly who she is, and she is the one who has to stand there and be seen. The rest of the series works from that shift: a woman who once thought she was caring for a pet, and a man who remembers every part of it. ## Who Are Eileen and Derek? Eileen is the character the story follows. She is the one who moves in, the one who misreads the situation, and the one who has to live with the results of a mistake she made out of kindness rather than malice. Derek Ashworth is the man she finds. He is blind when they first meet, and he is a CEO. Later, at the gala, he is fully sighted and appears to know her. The series does not lay everything out at the start, and the gap between the man in the apartment and the man at the gala is a large part of what keeps the story moving. The brother matters mostly as the reason for the mix-up. Eileen's belief that she is in her brother's home is what sends her down the wrong path in the first place. ## Why the Mistaken Identity Carries a Short Drama The premise gives the series two clear engines. The first is the gap between what Eileen believes and what is actually happening. She treats a grown man like a pet because she has decided that is what he is, and we watch her do it. The second engine is the reveal. Once she knows who Derek is, the story has to move somewhere new, and it does, from the apartment to the gala. Short dramas work best when each episode ends with something to look forward to. A secret that cannot hold forever does that job well. You keep watching because you know the misunderstanding has to break at some point, and you want to see what happens when it does. ## Where to Watch I Mistook The Blind Billionaire For My Brother's Dog The series has 28 episodes and streams on Runotoon. You can watch it in your browser, and the first 20 episodes are free. After that, episodes unlock with coins. There is no app to download. You can find the full series here: [I Mistook The Blind Billionaire For My Brother's Dog on Runotoon](https://runotoon.com/series/i-mistook-the-blind-billionaire-for-my-brother-s-dog-a039cb). If you want to see the episode list before you start, the [series page on Runotoon](https://runotoon.com/series/i-mistook-the-blind-billionaire-for-my-brother-s-dog-a039cb) shows everything in order. ## FAQ **How many episodes does the series have?** 28 episodes. **Is it free to watch?** The first 20 episodes are free on Runotoon. The remaining episodes unlock with coins. **Do I need an app?** No. Runotoon plays in your browser, so you can watch on a phone or a computer without installing anything. **What is the story about?** Eileen moves into what she thinks is her brother's apartment and finds a blind man chained inside. She mistakes him for her brother's pet dog and cares for him. When she learns he is Derek Ashworth, the CEO whose home she has trespassed in, she flees. They meet again at a gala, where a fully sighted Derek seems to recognize her. **Is there a romance in it?** The series builds on the connection that forms during the mix-up and on what happens when the two of them meet again at the gala. ## Series in this post - [I Mistook The Blind Billionaire For My Brother's Dog](https://runotoon.com/series/i-mistook-the-blind-billionaire-for-my-brother-s-dog-a039cb): 28 episodes, 9 free, then 15 Coins an episode