Undercover Grandpa (2017) online

Jake Bouchard,a shy 17 year old, has finally scored a date with the incredibly wonderful Angie. When Angie gets kidnapped, the truth about Grandpa comes out. In a last ditch effort to rescue Angie, Grandpa re-enlists "The Devil's Scum", his old WW2 unit who band together with Jake to go on one last mission