Minus gives no real explanation of itself and instead just tosses you into things. By 'things' I mean the random adventures of Minus, a little girl who appears to be able to do anything she wants. For example, what happens when Minus wants to play ball with her friend but someone tries to stop her? Well...
So, think you might be interested in reading more? You should, they're all really quite lovely and it's a completed comic so the whole thing can be found here: http://kiwisbybeat.com/minus1.html Hell, just looking for this part to do this post reminded me how much I adore reading them. :D
Also be sure to check out the creator(Ryan Armand)'s other comics here: http://www.kiwisbybeat.com/ They all seem to have their own charm.