The War with Grandpa (2020) is a family comedy centered around a young boy named Peter, who is forced to give up his bedroom when his grandfather, Ed, moves in with the family. Upset by the situation, Peter declares war on his grandfather in an attempt to reclaim his room. The battle between them escalates into a series of pranks and playful revenge, with both sides trying to outwit each other. The film blends humor with heart as the characters navigate their evolving relationship.

As the war continues, Peter and Ed’s rivalry gradually gives way to mutual understanding and respect. Through their conflict, both learn valuable lessons about family, growing up, and the importance of compromise. Despite its light-hearted tone, the movie explores themes of family dynamics, generational differences, and the bond that can form even through conflict, making it a fun and heartfelt film for audiences of all ages.