In the city of Whoville, human-like creatures referred to as Whos are packed with excitement approximately celebrating Christmas. The simplest person who isn’t amused is a cantankerous, green furred creature referred to as The Grinch (Benedict Cumberbatch), who has a heart ” sizes too small” and lives in a cave on the pinnacle of Mount Crumpit just north of Whoville. The Grinch’s most effective friend is his loyal pet dog Max and they each only go to Whoville whilst the Grinch needs to shop for meals and do awful matters. Meanwhile, six-yr-antique Cindy-Lou Who (Cameron Seely) notices that her mother Donna (Rashida Jones) is overworked trying to take care of her and her dual infant brothers, Buster and Bean. She at the start decides to ship a letter to Santa Claus to assist her mother but after encountering the Grinch, who sarcastically says that she’ll have to speak to Santa face-to-face approximately it, she finally makes a decision to try to trap Santa with the assist of her buddies.