Keeper of the Night/Day

young angels involved in a game invented by the archangel michael travel through portals to find the keeper of the night and day and obtain the key to the garden the elders seek along the way they encounter worlds of fascinating color, plants, creatures and evil beings they obtain strengths and powers they use to help them in their search they find themselves involved in a challenge much like the duels of ancient times in colliseums of the romans in order to obtain the information they need to proceed and sucessfully acomplish their objection they find the keeper and the key he holds only to find the instruction that the ones implementing this game are not to gain enterence and now they have a new objection to obtain