Have ever laid on the grass and imagine different animals? When you got bored with that you may have started thinking about what you would do if you could travel through time to see for yourself, how things were done. Or if you were a daydreaming boy, like me, you could wonder what you could do in the Roman time, with a machine gun or a laser pistol. Well in the next 4 books you will go with Angel and Gus on just such an Adventure. 85 of them. When you are done, book 5 is under construction.