How is it like to celebrate one birthday alone? Bonnie (Kat Graham) will soon find out in the upcoming episode of "The Vampire Diaries" season 6.

In the episode titled "The Day I Tried to Live," Elena (Nina Dobrev) does everything she can to bring Bonnie back to the present day in time for her birthday. This is why she asks for the help of her brother Jeremy (Steven R. McQueen) and Damon (Ian Somerhalder) to try for the last time to save Bonnie from being stuck in 1994. 

The trio attempts to repair the broken ascendant that brought Bonnie back to the past, but things start to go awry faster than expected after they manage to send an important message to Bonnie. Could Elena and the boys successfully bring her back? 

Elsewhere in the episode, Stefan (Paul Wesley) and Caroline's (Candice Accola) friendship grow stronger as the younger Salvatore brother continues to look after her to make sure that she is coping well despite all the problems that surround her. 

Still, Stefan is not safe against the threats of Enzo's (Michael Malarkey) wrath since the former Augustine prisoner is hell-bent to take revenge against Damon's brother. To make life harder for Stefan, Enzo involves the Salvatores' great niece Sarah (Tristin Mays) so that Stefan will be greatly bothered. Enzo uses the reluctant Matt (Zach Roerig) to mess with Sarah in the upcoming episode. 

Ultimately, Jeremy has to make one of the biggest decisions in his life in this episode. Can he really leave his elder sister Elena and the rest of his loved ones in Mystic Falls for good after their lives are put in danger while saving Bonnie? 

The thirteenth episode of "The Vampire Diaries" season 6 is scheduled to air on Feb. 5. It will be followed by the episode titled "Stay" that will air on Feb. 12.