Twenty years ago, a stranger gives Sohail and Mansour a map of an archaeological site for the Lotus Flower, and when an ancient city is discovered in the Giza region, Mansour asks Sohail to return to Egypt for this discovery. Grandpa Sohail tells his grandchildren the story of Osiris and Set.
Grandpa Sohail goes with his grandchildren to his friend Mansour to solve the mystery of the disappearance of the Lotus Flower and the Pharaonic papyrus. Meanwhile, a gang boss tells his men to watch Sohail and Mansour to steal the papyrus.
The pharaoh decides to send a large army to search for the lost flower and asks Romany to lead the army. At the same time, the princess wants to help the army but her father refuses, so she escapes and Thoth gets involved with her, and she asks him to help her find the Lotus.
Sohail and Mansour go with the grandchildren to the Pharaonic cemetery to reveal how Romany and the army went to Set to return the flower. Set succeeds in breathing life into the Pharaonic statues to fight them, but Thoth defeats them.
Thoth's horse is injured in battle, and he is forced to build a ship with the help of the seven heroes, but a swarm of mosquitoes fights against them. Thoth and the seven heroes succeed in overcoming them.
Set discovers that the seven heroes are coming after him, he makes his bird breathe evil thoughts into their minds, promising each one of them to own the kingdom and return the Lotus if he kills his friend, but only Thoth reveals his evil scheme.
The seven heroes emerge from the City of Fog, but each of them begins to quarrel with the other, trying to get rid of each other. Meanwhile, grandpa Sohail meets the gang boss after he discovers a picture of the cemetery on his computer.
Sohail and his grandchildren head back to the cemetery to search for the Key of Life, to solve the mystery of the flower. He reveals to them how one of the seven heroes died, but Thoth managed to resolve the situation among the rest of the heroes.
The heroes are faced with many monsters that rise from under the water. Thoth and Didi tie the rock pillars and succeed in dropping them on the monsters, but the storm starts to blow on the town to give warning of the burning of the leaves of the Lotus Flower.
Sohail and his grandchildren manage to find one of the keys to the cemetery and complete the unlocking of the puzzle, but Romany is killed and Thoth grieves over him, and on the other side, Kay discovers that Sany has betrayed the king and gave the papyrus to Set.
The team of heroes arrives at the Kingdom of Set, but Thoth is separated from them, and the remaining four are faced with different traps, but Bago succeeds in saving them, and on the other side, Sohail finds out that the first key of the cemetery got stolen.
The grandchildren search for the key and the gang kidnaps Fatima and Firas to blackmail Sohail. Fatima deceives the gang and tells them the rest of the story of Thoth and the importance of the Lotus Flower. Thoth returns to save the team, and Set causes an earthquake that kills Didi.
Mansour tells Sohail that they have one day left before the Lotus Flower disappears forever. Fatima and Firas escape from the gang. Sohail and Mansour find the papyrus. Meanwhile, Thoth and the team eliminate the mummy in the Land of Death released upon them by Set.
The gang boss seizes the key and the papyrus from Sohail and Mansour, and they head to the cemetery to open it and solve the rest of the mystery and get the flower. As the team approaches the Set Palace, a huge monster attacks them, and the flower is about to burn along with the whole city.
Grandpa Sohail succeeds in reaching the lost Lotus, and the police arrest the gang boss. Thoth succeeds in defeating Set, stopping the flower from burning, and restoring life to the kingdom again.