Undercover Grandpa is a lovely combination of humour, adventure and emotional moments that can be viewed as an entertaining, nostalgic ride. It is based on the story of a 17-year-old Jake who is a shy boy and has finally had an opportunity of love with Angie. But when Angie is kidnapped by a Russian general, the world of Jake becomes topsy-turvy. His Grandpa Lou is, however, retired intelligence officer whom he is not told of having a long history of undercover missions. Grandpa Lou uses the resources of no one, and brings together his former special mission team, The Devil himself, Scum, to save Angie, which causes a succession of humorous escapades. The comedy is skillfully balanced be it slapstick and action which made the movie very dynamic and entertaining to watch throughout.
The characters of the film are also likeable, particularly that of the Grandpa Lou, his paranoia and war stories make the film enjoyable and interesting. The story touches the heart since Jake is a pretty innocent boy, and the connection between him and his grandfather fills it with the themes of loyalty, bravery, and family. The interaction of the older team with the high-tech friend of the newly introduced Jake adds humor and life-affirming excitement, creating a feel-good movie of unlikely allies against all odds fighting to do what is right. The playful tone is enhanced with the direction and cinematography as the film is never heavy and serious and the score perfectly matches the comedic and action sequences.
The best part was the subtle message of the film that is crucial about the need to be loyal, brave, and never to underestimate the power of family ties. The climax of the emotional part, the death of Grandpa Lou, created an unforgettable impression and the sentimental center of the story. Although the movie offers a lot of corny scenes and a fairly formulaic storyline, Undercover Grandpa is an overall good movie as it glorifies the hero within us-the reminder that the strongest power may be found in the least expected places.