When his older brother, Alif, abruptly leaves home and never returns, Sol is left to watch his mother withdraw into a world he can no longer enter. As they search for each other in their respective worlds, they reminisce their common past, comprehending eventually the reality of what they've lost. One story unfolds after another and they finally meet, or do they ? LOST is filled with the author's own illustrations, colourful and dark at the same time, to convey the unspoken half. The third dimension of the book is its typographical design heightening the reader's reading experience.