Ice Age: Collision Course is a 2016 animated adventure comedy film directed by Michael Thurmeier and co-directed by Galen T. Chu. It is the fifth installment in the Ice Age franchise, following Ice Age: Continental Drift (2012). The film features the return of beloved characters, including Manny the woolly mammoth (voiced by Ray Romano), Sid the sloth (voiced by John Leguizamo), Diego the saber-toothed tiger (voiced by Denis Leary), and Ellie (voiced by Queen Latifah), alongside new characters voiced by Adam DeVine, Jesse Tyler Ferguson, and others.
The plot kicks off with Scrat, the acorn-obsessed squirrel, who accidentally activates an alien spaceship while trying to bury his acorn. This mishap sends him into space and inadvertently sets a giant asteroid on a collision course with Earth. Meanwhile, Manny is preoccupied with his daughter Peaches' upcoming marriage to Julian, which he disapproves of due to his perception of Julian's inadequacies. Sid faces heartbreak when his girlfriend Francine dumps him just before he plans to propose.
As asteroids begin to strike their home during Manny and Ellie's wedding anniversary party, the herd narrowly escapes and seeks refuge in a cave. Buck, a one-eyed weasel from previous films, returns to inform them that according to an ancient stone monument he discovered, asteroids have caused mass extinctions in the past. He believes they can prevent another disaster by traveling to the site of previous impacts.
The journey leads them to "Geotopia," a community of immortal animals living inside an asteroid. Here, Sid meets Brooke, a female ground sloth who falls for him. However, the leader of Geotopia initially refuses to help Buck's plan to use their crystals to deflect the asteroid because they are crucial for their longevity. After Sid accidentally destroys part of Geotopia while trying to impress Brooke, the residents realize that stopping the asteroid is more important than their lost youth.
In a climactic sequence, the herd and Geotopians work together to launch crystals into space using a geyser to divert the asteroid's path. The plan succeeds after some initial setbacks, including interference from flying Dromaeosaurs who initially sought to eliminate all mammals but ultimately join forces with Buck and the herd.
The film concludes with Peaches and Julian's wedding, where they receive support from their families and friends. Scrat's antics continue as he crashes on Mars before returning to Earth.
Ice Age: Collision Course received generally negative reviews from critics who felt that the franchise had run its course but still managed to gross over $408 million worldwide against a production budget of $105 million. This film is notable for being the final entry produced by Blue Sky Studios before its closure in 2021. A standalone spin-off titled The Ice Age Adventures of Buck Wild was released in January 2022 on Disney+