Mortimer & Whitehouse: Gone Fishing (2018)

S9E32 Rick's 21st Birthday

On the eve of Rick's 21st birthday, excitement fills the Nelson home as they anticipate the unveiling of an envelope left for him by his late Great-Uncle Walter. Everyone is eager to discover the secrets it holds, leading to a day filled with curiosity and anticipation as Rick prepares to unlock the mystery on this milestone birthday.