This is the only sidequest in the game that can be failed without ending the game. Using it, Lucca travels ten years into the past to prevent the accident that leaves her mother unable to walk. The red Gate at Fiona's Shrine is a Sidequest after completing the Sunken Desert. If the Dimensional Vortex is completed, the Gate in the bucket will instead take the travelers to the Time's Eclipse.
Afterword, the bucket Gate will return them to the inside of Lavos' shell. Once they make it inside the shell, there is another Gate that allows them to return to the End of Time to recuperate. This battle starts with the semi-final fight against Lavos' shell. The Gate in the bucket at the End of Time takes the group directly to the fight with Lavos. Magus, however, is sent to sometime prior to the Gate's opening in Antiquity. It deposits Crono and company in Prehistory, near Ioka Village. It grows to massive proportions, swallows up the Keep, and flings the heroes across time. The Gate in Fiendlord's Keep is a temporary Gate, created by the premature awakening of Lavos. In Chrono Cross, it is discovered that this Gate is one of the oldest in existence, as it permitted Leah to travel from her own time in Prehistory to Gaea's Navel, only to return there at the end of the game. The Gate in the Mystic Mountains does not have a corresponding geographic exit in another time period, at least not in-game. In order to make the other gates accessible, they must be used after these gates have been unlocked for them to link to the End of Time.