The City Where I Became Happy

Vika and her mother are used to living out of suitcases: Moscow, St. Petersburg, Rostov-on-Don... Now their journey leads them to a city that smells like oatmeal cookies.
Here, Vika's mother was born, and here she met the girl's future father. (About him - a separate story!) But in this cozy little town, the girl's calm life comes to an end: someone starts leaving mysterious letters in craft envelopes at their door. Each one contains a new task.
Who is this mysterious stranger? As Vika unravels this puzzle, she gradually falls in love with the city, makes friends... and discovers unexpected secrets about her family.