Fans would be surprised and moved by a “Titanic 2” teaser trailer starring Leonardo DiCaprio and Kate Winslet, considering the film’s iconic significance. This is a possible trailer plot:

A tranquil overhead image of the ocean starts the teaser. The camera slowly descends to show the rusty Titanic’s algae- and barnacle-covered remnants. “My Heart Will Go On” by James Horner plays slowly in the background, creating an unsettling, nostalgic ambiance.

Deep and resonant voiceovers discuss history repeating itself, arrogance, and the deep. Modern explorers find an incredible Titanic part that survived the sinking.
A silhouetted figure walks along a dimly lighted corridor that resembles the Titanic’s grand stairway. Leonardo DiCaprio as Jack Dawson emerges. The older man seems tormented and exhausted. As astonished as the crowd is to see him, his eyes flicker with incredulity.

Kate Winslet as Rose, in her later years, receives a strange Titanic letter or artifact. The camera focuses on her face as memories return. She says, “Jack?” doubting her sanity.
Modern Titanic ship “Titanic II.” is being built on screen. Its “unsinkable” design and current safety features make it a technological marvel. The world watches in wonder as it prepares for its first voyage.

Strange cold drafts, eerie apparitions in the passageways, and sightings of Jack in old photographs raise tension on the ship. The trailer suggests that Jack’s return is part of a greater force linking the past and present.

The teaser caps with a heart-stopping moment. Rose turns to find Jack behind her on Titanic II. Their faces show their prior love and suffering as they silently recognize each other. The screen blacks out as they reach out.
A screen fades in with “Some love stories never let go.” Under the Titanic II logo is the film’s release date.
This teaser would evoke nostalgia and mystery, leaving viewers wanting to see how Titanic proceeds.