Single mom Melissa couldn't fully put the past behind her.
Now a zookeeper, she and Ace Jr. have made a life carrying on without her husband. Much to Melissa's chagrin, however, 12 year old Ace Jr. has begun to follow in his father's comic footsteps. He has recently become a pet detective for the 7th grade set, often trying to recover classmates' missing pets, and always with big mishaps.
But when a master animal thief abducts a baby panda and his mom is wrongly arrested of the crime, Ace Jr. must jump into action.