Letters can be tough opponents for children or friendly playmates that spark curiosity and foster a desire to learn reading and writing. Along the way, Philip the mouse accompanies the children, learns with them, and offers tips. To make everything enjoyable, the letters appear in colorful, cheerful, and lifelike transformations and scenes: in mysterious letter Sudokus, in a self-made letter quartet, in various hiding spots, and in rhymed language and speaking roles. All around, there is coloring, cutting out, organizing, and putting things in order.