It's not too complicated. First, you need to find a reliable source to download the mod. Then, make sure your Minecraft version is compatible. After that, follow the installation instructions provided with the mod.
Installing the cartoon dog Minecraft mod is pretty straightforward. You have to search for a trustworthy website to get the mod file. Check if your Minecraft game is up to date for compatibility. Once you have the mod file, usually, you just need to put it in the correct folder of your Minecraft installation directory. Some mods might have additional steps mentioned in their documentation, so make sure to read that carefully.
It's not too complicated. Just go to the official Minecraft website, find the Story Mode section, and follow the download and installation instructions provided there.
It could be that the story violated some platform policies or it's temporarily being updated and not accessible. Another possibility is that it's part of a limited-time release and the availability period has ended.
It might be that the story is temporarily down for maintenance or updates. Sometimes, there can also be issues with licensing or permissions that make it unavailable for the moment.