Before by Will Hallewell
What happens when mom is away and two brothers are left alone at home?
Boredom sets in, of course!
In Before, the first book in the GAZORE! series, Doug agrees to take his younger brother, Sebastian, to the mall on a boring day. Once there, they set out on the adventure of a lifetime by discovering the Create-a-Creature store where you can build your very own creature, dress it, put the brains in, and bring it to life!
Wait-put the brains in?