Marcel, a mouse, resides in the enchanting and romantic city of Paris, often hailed as the most amorous place on Earth. However, he is not your typical resident. Marcel leads an intriguing life as a detective, using his keen senses and wit to solve mysteries. Despite his deep love for his hometown, Marcel frequently embarks on adventures to visit his old friend, Henry, in the ancient and chilly city of London.

The Earth bears a resemblance to an orange in various aspects. Both share a similar spherical shape, and the planet, akin to the fruit, possesses its own outer layer known as the Earth's crust. Within this crust, there exist openings known as volcanoes, through which stones, ash, and scorching lava are expelled during eruptions.

Hester, an exquisite woman hailing from an affluent and influential family, found herself swept off her feet by love and entered into marriage. However, her union proved to be rather lackluster, leaving her discontented. Despite giving birth to three children—a son and two daughters—who were bright and healthy, Hester struggled to develop genuine affection for them.

Bernardo resides in the enchanting city of Rome and possesses an avid love for hats. On a sunny day, as he strolls through his hometown, his attention is captivated by a magnificent hat showcased at a lively street market. As an ardent hat enthusiast, he promptly purchases the exquisite headpiece, carefully concealing his old one within his bag. When Bernardo returns home, his wife is taken aback by his latest acquisition.

Earth is adorned with a diverse range of mountains, each with its own distinct characteristics. Some mountains are blanketed in lush, verdant forests, while others boast icy peaks veiled in snow. These lofty summits often experience extreme cold, with certain ranges exhibiting dry and arid conditions. Mountains serve as the birthplace of numerous rivers, further enhancing their importance in the natural landscape.