Season 21 begins with 31 guys and girls competing to see who can take the best selfie. The number is reduced when the men and women square-off at a bowling alley.

The semi-finalists take part in a rigorous Los Angeles subway challenge to model outfits covering various seasons. Later, things get steamy during a nighttime photo shoot at a beach where the 14 finalists are chosen by Tyra and the judges.

The final 14 contestants move into a house. At the revealing photo shoot, the models are given only string to wear. Later, Tyra explains how the season's rain-themed introduction was put together.

A love triangle in the house causes some models to underperform at an optical illusion photo shoot. Later, during makeover day, one model unveils a never-before-seen look, while another suffers a breakdown.

Tyra teaches the models the three steps involved in making love to the camera to prepare them for a sexy black widow-themed photo shoot. Later, unexpected chemistry occurs between two models just before a challenge on stilts; and one model breaks a major house rule during a night of partying.

The models are tasked with mastering the ultimate hair whip for a wind-blown photo shoot. One girl is given a penalty and is allowed only five frames to capture the perfect image. Later, Nick Cannon gives the models a chance to be the face of his new ad campaign.

The models test their acting abilities when they compete for a walk-on role on a scripted TV series. Later, a frozen photo shoot turns icy after hurtful remarks are overheard in the house.

The models team up for a photo shoot challenge with judge Kelly Cutrone that results in two models recognizing the need to put their personal relationship on hold. Later, the models discover their common ancestry links when heritage comes into play as the styling concept for a futuristic sci-fi photo shoot that features a special guest posing as a robot.

Miss J gives some select models a private runway session to prepare them for Fashion Week, where they are challenged to book fashion shows with different designers, including Betsey Johnson. Later, a hair product photo shoot leads to harsh words and flaring tempers.

An eliminated model is brought back into the competition after fans cast votes via social media. Later, a challenge in a slaughterhouse; and an HIV/AIDS awareness photo shoot.