Merlin is a cat with a secret, but can he keep it? Join him on his secret mission as he attempts to save The City of London from an all out attack by Nano-Fleas. Who is behind this evil plot?

Merlin lives with a single parent family in Walthamstow, London. But everything is not as it seems…
Merlin works for the Government as a highly classified Secret Agent.
He has an operations centre under the stairs; he travels around London using underground tunnels and Hi-Tech equipment.
He is not the only one with a secret. Somehow the whole family is connected. Only one person knows everything. Dad and the two children, are unaware how Merlin protects and keeps them safe.

His missions take Merlin to famous landmarks and historical places. There are a variety of villains that Merlin must face, and he must juggle his loyalty to the Government and his love for family…