In Hyper.zip you can find Helen theme for your plank.
sudo add-apt-repository ppa:ricotz/docky
sudo apt-get update
sudo apt-get install plank
sudo apt-get install git
git clone https://github.com/Riccardinhocala/Hyper-Plank-Theme
cd ~
cd Hyper-Plank-Theme
unzip Hyper.zip
sudo cp -r Hyper/ ~/.local/share/plank/themes/
Run a Terminal as normal user (if you run as root, change could not take place)
plank --preferences
Now select "Hyper" in "Theme" list and change configuration in a way to have a fixed and fullscreen plank
Enjoy!