This channel is about the two brothers Mads and Martin. Mads is a tuxedo cat with a white tailtip. Martin is almost all black.
While we didn't see the two cats in their earliest "childhood", it seems that Martin has always played the role of the older brother. And Mads is fine with it. They have very different personalities, but remain loyal to each other (except when they are fighting!).
The channel is a continuation of good old Alfred's channel. He was beautiful and sweet cat (and quite different from Mads and Martin). His last resting place is in the lawn next to the apple tree. There is a little gravestone there (in the form of a cat).
Note that not all videos on the channel are recorded on the same day as they are published. In some cases, a video may not be published until several weeks later.
The content reflects the everyday of the cats - even the less happy events. So some videos may show cats violating house rules or catching animals you wish they wouldn't catch.