The ocean has fascinated mankind for thousands of years with all of its wonder and mystery. All life began in the sea. Animals, plants, microorganisms. It takes up 97% of the planet but only 5% has been explored, resulting in great mysteries to be solved. However new discoveries happen very often, furthering humanity's knowledge of the deep, blue sea.
For example in the summer of 2007, a small team of people in the Manaurai Sea in the South-west Pacific Ocean discovered a network of limestone caves, an entire temple submerged in the ocean, a graveyard of ships and planes along with an unusually large Great White Shark and their biggest discovery, the White Mother, the biggest mammal to have ever lived, even bigger than its relative the Blue Whale. The team consisted of marine biologists, Catherine Sunday and her unnamed colleague. The White Mother's discovery hit news worldwide, making the Manaurai sea one of the most popular diving sites in the world.
A couple of years later, another team of divers made their own ground-breaking discovery. The group was made up of former diver, Jean-Eric Rouvier, his granddaughter, Océane Rouvier, salvager, Gary Gray, oceanographer and archaeologist, Hayako Sakurai and another unnamed diver who are all part of the company, R&R Diving Service. Before this particular group was established, the service primarily consisted of Jean-Eric, his son Matthieu Rouvier and Matthieu's wife, Isabella. Unfortunately Isabella died after being diagnosed with brain cancer in 1995 when Océane was only two years old. The family were deeply upset by the loss, but they had to move on.
Three years later, Matthieu learnt about rumours of a mysterious treasure known as the Pacifica Treasure. After time he grew obsessed with it which caused tension between him and his father. Despite the conflicts, Matthieu searched for the treasure, looking for clues all over the world, ranging from the Mediterranean Sea to the Amazon Basin and finally concluding in the Red Sea.
During an expedition into a pair of crevasses in the Zahhab Region, the submersible Matthieu was using broke down in a cave. Knowing he wouldn't be able to swim out of the crevasse alive, let alone the cave, he left behind a lapis lazuli disk and a note for Jean-Eric in the submersible were to be recovered. Sometime after the incident, a group of divers, joined by Jean-Eric, searched for Matthieu and his submersible to no avail. He was later announced dead.
Isabella and Océane had pendants made out of lapis lazuli like the disk Matthieu possessed. One was kept by Océane after her mother's death, while the other was accidently dropped into the sea in an area within the Paoul Republic titled Deep Hole. In 2009, Océane went to search for her pendant by herself. R&R's newest member was sent by Jean-Eric, who was unable to participate as he suffered from decompression sickness, to find her. The diver found Océane and the pendant after fighting off an aggressive Tiger Shark using a tool titled the pulsar.
Eventually the group began to show interest in the pendants and realised that they could be assembled to create a flute. On the flute was a sentence engraved on it stating "The road to the truth is the Song of Dragons." After learning from an associate that the Song of Dragons was mentioned in a Turkish poem, they found that Matthieu likely engraved the sentence onto the flute and he hinted that the poem had significance to the Song of Dragons.
The poem also referenced an area in the Aegean Sea known as Valka Castle. The diver and Océane discovered Valka Castle and recovered an item titled the Okeanos tablet. They were able to seek assistance from Hayako Sakurai to decipher the sentence written on the tablet as it was written in a foreign language. Soon afterwards they allied with Gary Gray who they had met when searching for Valka Castle. They learnt that the tablet described an area in the Amazon Basin in Brazil named the Cortica River.
The group found another tablet and they found out that the tablets and the flute were made by an ancient civilisation of people named the Okeanides in the Zahhab Region. Eventually they found Matthieu's submersible along with the lapis lazuli disk and Matthieu's note inside. The disk was assembled with the other lapis lazuli pieces to create the Dragon Flute.
They discovered that the Pacifica Treasure was located within the Zahhab Region and they decided to search for it. After looking for the Pacifica Treasure's location, they found the region to be almost filled of dolphins and whales around one particular section of a continental shelf. They eventually came across a temple and began to explore within it. However they were attacked by a group of Goblin Sharks, lead by one large individual, bred by the Okeanides to defend the treasure. However the sharks were scared away by a pod of previously unknown species of whale.
The group found the treasure but were unable to take it with them as the whales started to attack the temple. The team escaped just before the entrance was blocked by rubble. After the event, the group remained together to form the new R&R Diving Service, becoming increasingly more famous worldwide. For two years after discovering the temple, the group were left with somewhat ordinary work. However in 2012, a chain of events occurred that would not only change R&R Diving Service but also, the world.