Walker is a drama that follows the journey of a man named John Walker as he navigates the challenges of life and seeks redemption for past mistakes. Despite facing numerous obstacles and setbacks, Walker's determination and resilience ultimately lead him on a path of self-discovery and personal growth.

In 2011, Tsai Ming-Liang staged a play, "Only You", for Taiwan's National Theater and Concert Hall. In it, there was a powerfully moving scene where monk Xuanzang walked at an extremely slow pace for half an hour. Lamenting the transient nature of theater, Tsai decided to make a movie out of this slow-walking performance, "No Form", the first of his "Walker Films" series.

In 2015, Tsai Ming-Liang was once again invited by the Hong Kong International Film Festival to make the opening short film. This time, he selected Shibuya station in Tokyo as his main filming location and invited the famous Japanese actor Masanobu Ando to appear alongside Lee Kang-Sheng. They sleep separately at a capsule hotel and cleanse themselves at a public bath. Their fatigued bodies yearn for sleep but restless minds keep them for falling asleep. "No No Sleep" won the Best Director Award at the Taipei Film Festival.

A continuation of Tsai Ming-Liang's Walker series, featuring Lee Kang-Sheng as a barefoot monk who walks very slowly.

In 2012, Taiwanese architects Michael Lin and Liao Wei-li invited Tsai Ming-Liang to create moving visuals for their exhibit at the Venise Architecture Biennale. Using the space at their preview exhibition in Taiwan, Tsai Ming-Liang made two short films, "Sleepwalk" and "Diamond Sutra", using the "Walker" concept. "Diamond Sutra" was later selected to be the opening short film for the Venise Film Festival. Tsai-Ming Liang said that gazing at the steam rising from a rice cooker reminded him of his mother's face as she laid dying, exhaling her final breath.

In 2013, Tsai Ming-Liang was invited by Malaysian filmmaker Tan Chui Mui to make a short film for an anthology film, "Letters from the South". Tsai Ming-Liang returned to his hometown in Kuching, Malaysia and made a "Walker" film at his childhood home, "Walking on Water". The seven-storey flat which contained the happy memories of his childhood is now occupied by strangers. His old neighbour, an older girl who used to bathe and feed him when he was a child, has also grown old.

The walker with the shaved head and dressed in a red robe is barefoot. He walks slowly but determinedly through the forest, over stones and grassland. He also makes his way through the shadows of trees and houses. He sets foot in the train station, the church and the museum. The sun rises and sets again. The walker passes through Washington, D.C. Another stranger is also on the move in the city. We are unsure whether or not he is following the walker.

In 2018, Tsai Ming-Liang was invited by the Northeast and Yilan Coast National Scenic Area Administration to make this film, his eighth in the "Walker" series. In the constant passage of time, the Zen-like footsteps of the Walker has finally allowed us to see the Pacific Ocean, the open sky, the seagulls, the black sand, an eel catching settlement that arose in the cold winter rain, the twisting branches of the lintou trees, flotsam piled up like mountains, and a newly constructed cement house, which seems to offer a temporary place of rest for the Walker. "Sand" premiered together with the opening of the Zhuangwei Dune Visitor Center.

The ninth opus of his Walker Films series, which was shot at Centre Pompidou.

Journey to the West follows the story of a Buddhist monk as he travels through France, facing various challenges and experiencing personal growth along the way. The film explores themes of spirituality, self-discovery, and cultural differences.