With a loud finger, half of the life in the universe is gone.

With the help of Captain surprise (brie Larson), the nearly desperate Avengers find the hiding place of mieba (Josh Brolin), only to learn that six infinite gems have been destroyed, and their hope is completely destroyed.

So after five years, the ant man (Paul Rudd) lost in the quantum field unexpectedly returns to the real world, and his appearance ignites the hope for the surviving Avengers.

Tony (Robert Downey Jr., Jr.) who breaks his old grudge with Captain USA (Chris Evans) finds a way to travel through time and space, and superheroes from all over the world gather again.

They travel through different times to collect infinite gems.

In the process, the parallel universe's exterminators realized their plan.

The final battle destined to go down in history, superheroes continue to fight for the faith they abide by in their hearts

讲述《复仇者联盟3：无限战争》的毁灭性事件过后，宇宙由于疯狂泰坦灭霸的行动而变得满目疮痍。无论前方将遭遇怎样的后果，复仇者联盟都必须在剩余盟友的帮助下再一次集结，以逆转灭霸的所作所为，彻底恢复宇宙的秩序。

该片于2019年4月26日在美国上映，4月24日在中国上映。

截止2019年7月21日，《复仇者联盟4》全球票房达27.89亿美元，获全球影史票房总冠军。