When Oleg and Emma invent a new classmate called Sebastian, they are amazed when he appears - very much real - in their secret den. But as the trio begin their adventures, more impossible things keep happening. Things soon take a turn for the dangerous when the three friends are pursued by the mysterious Institute of Unreality, who want to capture and erase Sebastian, restoring order to the world. 7+
From the bestselling author of 'Stories for Boys Who Dare to be Different'.