Mr. Henri's family moves to a new house. Yos, the second child of Mr. Henri and Mrs. Dian, gets a new friend. A special friend that no one can see. His name is Tomi. Tomi is a lonely ghost. Friendship happens to everyone, regardless of wealth, status and position. And soon, Yos and Tomi become best friends.
After this friendship starts, Yos and his family start to experience strange things. Not as a result of Tomi but Sasha. She is a naughty ghost who doesn't like the friendship between the ghost (Tomi) and the human (Yos). Besides, she doesn't like Tomi, the little ghost who prefers to help rather than scare humans.
Sasha does everything possible to get rid of Yos's family, so Tomi will lose his friend. Sasha bothers Lina and Lili, Yos’s sisters, as well as the rest of the family and employees; always making it seems like Yos is to blame. Even though Sasha is more powerful than Tomi, Yos and Tomi always face Sasha together to defend their friendship.