Kara Danvers (Melissa Benoist) will be trapped in a make-believe world she will never want to leave in the upcoming episode of the hit CBS series "Supergirl."

In "For the Girl Who Has Everything," Hollywood Hills reports that Supergirl will be under the control of a parasitic alien. The specie will attach itself to Kara and create a fantasy version of her home planet, where everyone is alive and well. Followers of the series know perfectly that Krypton has been destroyed the moment Kara and her superhero baby cousin left in their spaceships. All of their people died.

With the creature making Kara believe she is back with her family and friends, will she ever want to wake up from her dream? This will be a problem of huge proportions, as National City is again being targeted by another Kryptonian attack. Her sister Alex (Chyler Leigh), Hank Henshaw (David Harewood), and the Department of Extranormal Operations (DEO) will have to face this battle by themselves, as Kara will not be able to help.

Last episode, Kara faced the Bizarro version of herself. It turned out Maxwell Lord (Peter Facinelli) kidnapped comatose girls who looked like Kara and turned them into fighting machines. He succeeded in creating a powerful antihero. He schooled her that Supergirl was bad and she deserved to be punished. Bizarro was the complete opposite of Kara, as regular Kryptonite did not affect her as expected. Luckily, Alex thought of the blue variety and it worked. The DEO apprehended Bizarro, as well as Maxwell.

Elsewhere, Kara chose to end things with Adam Foster (Blake Jenner). She believed that her focus should be in protecting the city. Being in love would just make her weak, and she did not want that to happen. Cat Grant (Calista Flockhart) was very disappointed in her assistant. Kara was also upset with herself, as she knew she broke Adam's heart.

"Supergirl" airs Mondays at 8 p.m. EST on CBS.