Kimmi Jambo has recieved an instant telegram from Heidi Löwentrapp.It's stamped by an invisible Post Office in Hamburg that is connected to Heidi's house by an enchnted wall. Heidi asks Kimmi to help her find Lazarus, who she believes has survived a devastating plane crash just before the coast of Mombasa. She thinks Lazarus is the only one who know why she does not have relatives like everyone else. Looking at the behavoiur of the magic stamps Heidi has sent him, Kimmi is sure Heidi is no ordinary girl from around the block! The Postamt 13, is not only a fascinating stamp, but it is a portal that leads directly to Heidi's street, when he scans it with his Philatelist's glass. Kimmi lets his siblings accompany him on these uncharterd waters. Sara is sensitive and critical, Tony tags along and lets his tummy rule, while Kimmi uses his gift to see the invisible, which gives him an upper hand in seeking and recapturing dangerous restless stamps that have acquired physical form. He puts them in a huge Stamp Album, which he is forced to buy at an open air market behind Nairobi's largest slum, as an angry mob chases after him. Kimmi Jambo  becomes very suspicious when a mysterious uncle that neither their best friend Greta nor her parents have ever met before, appears on the scene, just as the spooky Mystic Fortunes, a shop where people can buy life-long dreams, open's on the 3rd Long avenue. Kimmi knows things aren't what they seem  when he sees his football coach exchange his beloved golden teeth for an outrageous hairdo.The shopkeeper happens to be Coldfist, a stamp that wants to live forever, and who has the blood of Johannes   Löwentrapp the very first Philatelist on his hands, and is ready to kill again! Lazarus, who  is stowed upon a shelf in Kimmi's room wakes  up one night from his deathly slumber and warns Kimmi of Coldfist's plans. The black crow that has been sitting on his windowsill watching him these past weeks is actually the enchanted creature that almost got him stoned at the  marketplace. He is however, very pleased that the huge, grime crusted stamp album he'd bought so unwillingly should be linked to the mysterious demise of Johannes Löwentrapp. Lazarus is ancient, intelligent and worth a great fortune. He has seen how commited Kimmi has been putting him together again. He knows he can trust him, and because the boy can read the invisible instructions in him, together they can catch Coldfist before he hurts Heidi. He can hardly wait to see the evil stamp put in his rightful place, within  his translucent pages for good, like he promised the first Philatelist and he will keep his word. When Greta goes missing and reappears days later on Kimmi's door, unconscious in the arms of Sebastian the Gorilla, who finds her while doing his nightly escapades, Kimmi finds himself on a hot trail. Not only has something scared Greta out of her wits, but she has been to Egypt where she has seen Heidi's lost Columbus monkey with an Archaeologist whose name, surprisingly,  is Elizabeth Löwentrapp. On New Year's Eve Kimmi, Sara, Greta and Tony go to Heidi's only to find Coldfist has already arrived and pretending to be part of the reuniting Löwentrapp clan. Greta exposes him as her fake uncle, Coldfist gets ugly and tries to capture Lazarus and almost kills Heidi's father with his frosty grip in the ensuing fight but Kimmi immobilizes him with a sling shot and scans him with his Philatelist's glass. Coldfist becomes what he has been avoiding for over three hundred...