- Both films take place after an apocalypse event.
- Each film’s (nominal) main character is a male lone-wolf figure (Kevin Costner; Tom Hardy).
- The lone-wolf man tries to remain uninvolved and unaffiliated, but is dragged into the situation.
- He ends up traveling with a female companion (Jeanne Tripplehorn; Charlize Theron).
- The female companion is in search of a utopia (Dryland; the Green Place).
- She is responsible for the life of another (Tripplehorn) or many others (Theron).
- Despite his misgivings, the lone wolf helps the woman and her ragtag charge(s) outrun a deranged warlord (Deacon; Immortan Joe) and his lackeys who drive smoke-pouring vehicles and attack with all manner of fiery and/or explosive projectiles.
Obviously they’re not exactly the same, but the basic idea (ahem) holds water.
Turns out all you need to do to make Waterworld a successful film is remove almost all the water.