Benjamin the Gardener

S2, E16: The Zoo Director asks Benjamin and Otto to look after his Aunty Hilda's garden. She has to go away at exactly the same weekend when the grand garden contest is to take place. Benjamin and Otto take on the job because Aunty Hilda would love to win first prize. But then somebody kidnaps Aunty Hilda's frogs and tries to steal her beautiful water lilies. Benjamin and Otto want to set a trap for the crook.